Guides
Clear, practical explanations of the technology you use every day — each with a curated video and links to the matching tools.
JSON Explained: A Practical Guide for Developers and Analysts
What JSON is, its six data types, common syntax errors, JSON vs XML vs YAML, and how to read, validate and transform JSON quickly.
Developer · 10 min readRegular Expressions for Beginners: Patterns You'll Actually Use
Learn regex from scratch: character classes, quantifiers, anchors, groups and lookarounds, with ten copy-ready patterns and common pitfalls.
Developer · 9 min readGit & GitHub Basics: The Commands That Matter
A practical introduction to Git and GitHub: commits, branches, merging, remotes, pull requests and the ten commands that cover daily work.
Network & IT · 8 min readHow DNS Works: From Typing a URL to Loading a Page
A clear walkthrough of the Domain Name System: resolvers, root and TLD servers, record types, TTL and caching, plus how to debug DNS problems.
Security · 8 min readPassword Security in 2026: What Actually Protects Your Accounts
Why length beats complexity, how attackers crack passwords, password managers, passphrases, passkeys and two-factor authentication explained.
Developer · 6 min readBase64 Explained: What It Is, How It Works and When to Use It
How Base64 encoding works bit by bit, why it adds 33% overhead, URL-safe Base64, data URIs, and the security myths to avoid.
Developer · 7 min readCron Jobs Explained: Scheduling Tasks Like a Pro
Understand crontab syntax, special strings, environment pitfalls, logging, time zones and modern alternatives to cron.
Network & IT · 10 min readLinux Command Line Basics: 30 Commands to Get Productive
Navigate files, inspect logs, manage processes and permissions, and chain commands with pipes — a practical Linux terminal primer.
Security · 8 min readHow HTTPS and TLS Work: The Padlock, Explained
What happens in a TLS handshake, how certificates and certificate authorities create trust, TLS 1.3 improvements and common HTTPS errors.
Network & IT · 9 min readIP Addresses and Subnetting Made Simple
Understand IPv4 and IPv6, public vs private addresses, CIDR notation, subnet masks and how to size a subnet — with worked examples.