Learn step by step, at your own pace.
Focused mini-courses connect practical server guides into a clear path, from understanding a system to applying your knowledge.
Self-Hosted n8n: Data, Webhooks & Security
Follow an n8n workflow from incoming data to external services, understand test and production webhooks, then review the security settings that protect a self-hosted instance.
Linux Website Monitoring: Check, Alert, Verify
Check what your website actually returns, send failure and recovery alerts to Telegram, and move the observer outside the server it watches.
AI Agents on Linux: Understand, Plan, Review
Learn how an agent reaches a Linux server, plan the access a task needs, and review the security boundaries before use.
Linux Backups: Create, Verify, Restore
Choose what to save, create and check a file archive, then restore it into a separate directory and compare the recovered files.
Linux Automation: Cron & Bash Scheduling
Understand recurring Linux jobs, run a Bash script automatically, and protect important tasks against overlapping execution.
Master systemd Timers
Learn how systemd schedules tasks, create a working timer, and troubleshoot failed services and missed executions.
The First Day of a Public Linux Server
Discover what happens when your VPS becomes reachable from the internet, investigate unfamiliar SSH login attempts, and secure remote access without locking yourself out.