Notes for learning in the open.

A focused index of my public technical writing: beginner-friendly entry points into tools, Linux foundations, and the systems that make open-source learning more approachable.

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Beginner guide Sep 25, 2025

Emacs Chapter-1

An absolute beginner’s guide to Emacs: installation on GNU/Linux, graphical and terminal modes, frames, buffers, keybindings, modes, customization, and built-in help.

Emacs
GNU/Linux
Text editors
Beginner guides

Fundamentals Read on blog

Beginner guide Feb 17, 2024

Docker — Build, Ship & Run

Build, ship and run a small Python app: what an image is, how a container starts from it, and how a registry moves the same image to another machine.

Docker
GNU/Linux
Beginner guides

Containers Read on blog

Related resource

ChennaiFoss Jan 2026

Unlocking the Container

A companion talk on Linux namespaces and the fundamentals behind containers.

Containers
Linux
Talks