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Short notes with runnable examples, one folder per topic. Each example is built, applied or deployed in CI on every change, so the commands work as written.

Read a note when a game sends you there, or start here and play afterwards. Topics with a game show a Play it banner at the top of every page.

Section	Topics
Infrastructure	Kubernetes, Docker, Terraform, Linux / Shell
Delivery	CI/CD, GitHub / Git
Operations	Observability, Database / SQL
AI Tooling	Agent Skills, MCP
Capstone	Docker, Kubernetes, Observability and CI/CD in one walkthrough

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