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Linux Beginner Path
Go from first terminal session to confident daily Linux usage with reading, labs and revision prompts.
PathBash Automation Path
Learn variables, tests, loops, arguments, functions and safe automation projects.
PathJunior Sysadmin Path
Build the core skills needed for logs, users, services, storage, networking and change control.
PathHosting Support Path
A practical route through DNS, email, SSL, logs, cPanel-style hosting and WordPress issues.
PathDNS Troubleshooting Path
Understand records, resolvers, propagation, mail DNS and safe customer explanations.
PathEmail Troubleshooting Path
Learn MX, SPF, DKIM, DMARC, bounces, queues, reputation and delivery checks.
PathLinux Plus Study Path
Study Linux certification topics with books, labs and spaced revision prompts.
PathDevOps Foundations Path
A careful first step into Git, containers, CI, monitoring, IaC and deployment thinking.
Support guideWebsite Down Checklist
A calm first-response checklist for checking HTTP status, DNS, server load, logs and recent changes.
Support guideDNS Troubleshooting Guide
A practical guide to A, CNAME, MX, TXT, NS, TTL and propagation checks.
Support guideEmail Delivery Troubleshooting
Check SPF, DKIM, DMARC, MX records, queues, bounces and reputation without flapping about.
Support guideSSL Certificate Troubleshooting
Diagnose expired certs, wrong hostnames, chain issues, mixed content and HTTPS redirects.
Support guideLinux Disk Usage Checks
Find large files, full partitions, inode usage, logs, backups and safe cleanup candidates.
Support guideMySQL Troubleshooting Basics
First checks for database connectivity, size, slow queries, crashed tables and resource pressure.
Support guideApache and LiteSpeed Log Checks
Use access logs and error logs to understand traffic, 403s, 500s, bots and broken scripts.
Support guideModSecurity Basics for Support
Understand rule hits, false positives, safer exclusions and customer-friendly explanations.
Support guideWordPress Hosting Troubleshooting
A hosting-focused checklist for plugins, themes, PHP errors, caching, cron and database issues.
Support guidecPanel and WHM Beginner Guide
A plain-English tour of accounts, domains, DNS, email, files, logs and package limits.
Cheat sheetLinux Commands Cheat Sheet
Navigation, files, permissions, processes, logs, services, storage and networking commands.
Cheat sheetBash Scripting Cheat Sheet
Variables, arguments, tests, loops, functions, traps and safe script patterns.
Cheat sheetDNS Records Cheat Sheet
A, AAAA, CNAME, MX, TXT, SPF, DKIM, DMARC, NS and TTL explained quickly.
Cheat sheetGit Commands Cheat Sheet
Clone, branch, status, diff, commit, log, merge, rebase, stash and recovery basics.
Cheat sheetSSH Cheat Sheet
Connections, keys, config, known_hosts, tunnels, file copies and safety checks.
Cheat sheetHosting Support Checklist
A first-response checklist for DNS, website, email, SSL, disk, database and WordPress tickets.
ReviewThe Linux Command Line Review
A practical review of William Shotts’ beginner-friendly command line book.
ReviewPro Git Review
A review of the official free Git book and how to use it without getting buried in branches.
ReviewHow Linux Works Review
A practical look at the deeper Linux concepts behind files, processes, networking and boot.
ReviewUNIX and Linux System Administration Handbook Review
A classic sysadmin reference reviewed for modern learners and support technicians.
ReviewLinux Bible Review
A large Linux reference reviewed for beginners, admins and certification learners.
ReviewAutomate the Boring Stuff with Python Review
A practical review for support engineers who want Python automation after Bash.
Book notesThe Linux Command Line Study Notes
Chapter-style notes with commands to practise after reading The Linux Command Line.
Book notesPro Git Study Notes
A practical route through commits, branches, remotes and recovery using Pro Git.
Book notesHow Linux Works Study Notes
A topic-by-topic companion for processes, boot, networking, storage and logs.
Book notesGNU Bash Manual Study Notes
A sane route through the Bash manual, because reading it straight through is heroic but unnecessary.
LinuxThe Linux Command Line
Linux command line basics, files, pipes, shell scripting
GitPro Git
Git fundamentals, branching, remotes and workflows
BashGNU Bash Reference Manual
Bash shell behavior, expansions, builtins and scripts
LinuxDebian Administrator’s Handbook
Debian administration, packages, services and system management
PythonAutomate the Boring Stuff with Python
Python automation for files, spreadsheets, web data and repetitive tasks
Computer ScienceOpenStax Computer Science Books
Computer science, Python, information systems and data topics
WebMDN Web Docs
HTML, CSS, JavaScript, web APIs and frontend reference
LinuxLinux Foundation Introduction to Linux
Linux concepts, command line, desktop and admin basics