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API Basics
Understand endpoints, methods, and payloads
Category
Technology
Systems, software, hardware, data, and digital infrastructure.
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Building a Simple REST API
Plan resources, routes, and handlers for a small API
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Cloud Cost Optimization
Control cloud spend with monitoring, rightsizing, and automation
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Command Line Starter
Basic shell commands to navigate and automate tasks
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Data Visualization Basics
Good charts match data types to clear visuals
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Docker Basics
Build, run, and share containerized applications
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Intro to Cybersecurity
Simple practices lower most cyber threats for individuals and teams
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Intro to SQL Queries
SELECT, filter, join, and aggregate tables
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Organizing Digital Files
Simple structures and naming make files easy to locate
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Password Hygiene
Strong passwords and managers reduce account compromise
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Resume Writing
A resume summarizes experience to match a role
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Version Control Basics
Version control records edits, branches, and merges for collaboration
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Web Accessibility Basics
Follow core a11y practices for inclusive websites
how-it-works
Global Positioning System
Receivers compute position from satellite time signals
how-it-works
Machine Learning
Algorithms learn patterns from data to make predictions or decisions
what-is
Blockchain
A blockchain is a distributed ledger secured by cryptography and consensus nodes
what-is
Cloud Computing
Cloud computing delivers computing resources over the internet on demand
why-important
Cybersecurity Hygiene
Good security hygiene reduces common cyber risks
why-important
Data Privacy
Protecting personal data limits misuse and maintains trust
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API Rate Limiting Basics
Implement rate limits, quotas, and backoff responses to keep APIs stable and fair.
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Basic Data Privacy Checkup
Run a quick privacy audit: permissions, data exports, account cleanup, and stronger settings.
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Data Cleaning Checklist Basics
Follow a quick checklist to validate, fix, and document datasets before modeling or reporting.
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Digital Photo Backup Basics
Set up a 3-2-1 backup plan for photos with local and cloud copies and routine checks.
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Git Branching Workflow Basics
Set up a lightweight branching model with clear naming, reviews, and release cadence.
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Home Network Segmentation Basics
Create guest and IoT networks to isolate risky devices from primary work and personal data.
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Incident Postmortem Basics
Run a blameless postmortem to find causes, actions, and follow-ups after an incident.
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Password Manager Setup Basics
Pick a trusted password manager, set a strong master password, and migrate logins safely.
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Passwordless Auth Basics
Learn hardware keys, passkeys, and platform authenticators for lower-friction logins.
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Personal Knowledge Base Basics
Set up a simple system to capture, tag, and retrieve personal knowledge.
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VPN Setup at Home Basics
Configure a home VPN for encrypted traffic, remote access, and safer browsing.
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Accessibility Audit Basics
Check keyboard access, semantics, color contrast, and focus handling for key pages.
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AI Safety Guardrails Basics
Define allowed uses, add filters, and monitor outputs to reduce AI risks.
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API Pagination Design Basics
Pick between offset and cursor pagination, expose limits, and document client use.
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API Request ID Basics
Add request IDs to correlate logs across services and speed up debugging.
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API Versioning Basics
Choose a versioning style, deprecate gracefully, and document migrations.
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Backup Encryption Basics
Choose an encryption method, manage keys, and test restores for secure backups.
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Backup Network Connection Basics
Set up a secondary internet link or failover for critical systems.
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Beginner Photoshop Workflow Basics
Use layers, adjustments, masks, and exports for clean edits.
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Beginner Video Editing Basics
Organize clips, cut on action, add audio cleanly, and export to spec.
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Biometric Data Privacy Basics
Collect, store, and delete biometric data with strict consent and security.
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Browser Cookie Audit Basics
Identify cookies, set secure attributes, and trim unnecessary trackers.
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Browser Storage Basics
Compare cookies, localStorage, sessionStorage, and IndexedDB for web apps.
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Debugging with Logs Basics
Add structured logs, correlate requests, and narrow issues with timestamps and context.
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Developer Portal Basics
Organize APIs, docs, keys, and support flows in one place for developers.
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Digital Footprint Audit Basics
Find old accounts, public info, and data trails, then reduce exposure.
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Disposable Email Safety Basics
Know when to use disposable emails and the risks to account recovery and trust.
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DNS Troubleshooting Basics
Check name resolution with ping/nslookup, clear caches, and validate records.
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Dual Boot Setup Basics
Plan partitions, install the second OS, and manage a bootloader safely.
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Edge Caching Setup Basics
Set sensible cache headers, use a CDN, and validate changes safely.
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Email DMARC Setup Basics
Publish SPF/DKIM, add a DMARC record, and monitor reports before enforcing.
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Email Phishing Spotting Basics
Check sender details, URLs, and requests for urgency to avoid phishing.
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Ethical AI Disclosure Basics
Tell users where AI is used, what data is processed, and how to opt out when possible.
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Frontend Performance Audit Basics
Profile load, render, and interaction metrics, then fix the top offenders.
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Home Internet Backup Basics
Set up a failover using cellular hotspots or dual-WAN routers for outages.
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Home Internet Troubleshooting Basics
Diagnose slow or dropped connections with a simple checklist.
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Home Server Setup Basics
Choose hardware, install a lightweight OS, and secure services for home lab use.
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IoT Device Hardening Basics
Change defaults, isolate networks, and keep firmware updated to reduce IoT risk.
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Laptop Battery Care Basics
Manage charge ranges, heat, and settings to keep batteries healthier longer.
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Laptop Clean Install Basics
Back up, create install media, and reinstall the OS with drivers and updates.
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Mesh Wi-Fi Setup Basics
Place nodes wisely, use wired backhaul if possible, and test coverage.
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MFA Policy Basics
Require MFA on key accounts, prefer stronger factors, and make recovery safe.
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NAS Backup Basics
Add off-NAS backups with snapshots, external drives, or cloud sync.
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Password Manager Emergency Access Basics
Designate trusted contacts and rules for emergency access to your password manager.
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Password Reuse Audit Basics
Use a manager to detect reused passwords and rotate them to unique ones.
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Password Rotation Policy Basics
Use long unique passwords, rotate only when needed, and pair with MFA for stronger security.
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Passwordless Passkey Rollout Basics
Enable passkeys, keep backups, and educate users for a smooth transition.
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Prompt Engineering Basics
Use roles, constraints, and exemplars to improve LLM responses and reduce errors.
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Raspberry Pi Hardening Basics
Change defaults, update packages, restrict access, and enable a firewall.
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Remote Desktop Security Basics
Harden RDP or VNC with strong auth, network limits, and updates.
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Router Firmware Upgrade Basics
Back up settings, apply firmware updates, and verify connectivity after reboot.
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SQL Query Debugging Basics
Check filters, joins, and groups step-by-step to isolate SQL issues.
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UPS Safety Basics
Size correctly, ventilate, and replace batteries on schedule.
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USB-C Cable Safety Basics
Use certified USB-C cables with proper power/data ratings to avoid damage.
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USB Drive Safety Basics
Scan, encrypt, and control USB use to reduce malware and data loss risk.
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VPN DNS Leak Test Basics
Run DNS leak tests to confirm queries stay inside the VPN tunnel.
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VPN Kill Switch Basics
Enable and test a VPN kill switch so traffic stops if the tunnel drops.
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VPN Profile Management Basics
Organize, update, and remove VPN profiles to keep connections reliable and secure.
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VPN Split Tunneling Basics
Configure split tunneling to balance privacy, speed, and access needs.
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WebAuthn Passkey Troubleshooting Basics
Diagnose device, browser, and account settings when passkeys fail to register or sign in.
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Wi-Fi Security Audit Basics
Check encryption, passwords, firmware, and attached devices to harden Wi-Fi.
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Wi-Fi Analyzer Basics
Scan channels, signal strength, and noise to improve Wi-Fi performance.
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Wi-Fi Channel Planning Basics
Pick the best 2.4 GHz and 5 GHz channels to improve Wi-Fi stability.
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Wi-Fi Guest Network Basics
Create an isolated guest network with its own password and limits.
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Wi-Fi Roaming Optimization Basics
Tune AP placement and settings so devices roam smoothly between access points.
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Wi-Fi Security Checklist Basics
Use WPA2/3, strong passwords, updates, and isolation to secure home Wi-Fi.
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Zero Trust Network Basics
Segment by identity and device posture, verify continuously, and minimize implicit trust.
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API Error Handling
Design APIs to return clear errors, safe defaults, and useful diagnostics.
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API Gateway Basics
API gateways centralize routing, auth, and rate limits for services.
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API Pagination
Use pagination patterns to retrieve large API datasets efficiently.
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API Rate Limiting
Rate limiting caps requests to prevent abuse and manage capacity.
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API Versioning
Version APIs to change without breaking clients.
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Bash Scripting Basics
Write simple bash scripts to automate repetitive tasks.
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Browser Caching Headers
Use cache-control, etag, and expires to manage browser caches.
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Browser DevTools
Use DevTools to inspect elements, network calls, and performance.
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Caching Strategies
Use caching patterns to reduce load and speed responses.
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Canary Deployments
Canaries send new versions to a small cohort before full rollout.
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CI/CD Basics
CI/CD automates building, testing, and deploying changes reliably.
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Code Review Basics
Effective reviews check correctness, clarity, and risks without nitpicking style.
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Compliance Basics
Understand core practices behind common compliance frameworks.
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Config Management Basics
Keep configuration versioned, validated, and separate from code.
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Container Security Basics
Reduce container risk by hardening images, registries, and runtime.
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Cron Job Basics
Cron schedules recurring tasks on servers using time expressions.
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Data Backup Basics
Use 3-2-1 backups with testing and encryption.
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Data De-identification
Remove or mask identifiers to reduce privacy risk in data.
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Data Pipeline Basics
Plan and build simple data pipelines with staging, transforms, and monitoring.
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Data Quality Checks
Validate data with schema, ranges, and freshness checks.
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Data Retention Policies
Define how long to keep data and how to delete it reliably.
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Database Indexing Basics
Indexes accelerate lookups by organizing data for common filters.
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Database Migrations Basics
Plan and apply database migrations with backward compatibility.
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Edge Caching Basics
Use CDNs to cache static and semi-static content near users.
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Email Security
Keep email accounts safe with MFA, phishing awareness, and secure settings.
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Endpoint Monitoring Basics
Track endpoint health and security with agents and alerts.
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Feature Flag Basics
Feature flags control rollouts and risk without redeploying.
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Feature Store Basics
Feature stores manage reusable ML features with consistency across training and serving.
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Frontend Accessibility Testing
Test web accessibility with automated checks and manual keyboard/screen reader passes.
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Frontend Performance Basics
Optimize web performance with lean assets, caching, and measurement.
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Git Branch Strategies
Pick a branching model to match team workflow and release cadence.
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Graceful Shutdown Basics
Graceful shutdown lets services finish work before exiting.
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gRPC Basics
gRPC uses HTTP/2 and protobuf to make fast, typed RPC calls.
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Home Network Setup
Set up a home network with secure Wi-Fi, proper placement, and updates.