Learn Tmux: Sessions, Windows, Panes, and a Command Reference


The words Learn Tmux in white over a dark terminal split into panes, with a green tmux status bar along the top.

Learn tmux fast: sessions, windows, panes, the prefix key, and .tmux.conf, plus a searchable command reference and curated videos, podcasts, and books.

Learn Mermaid


Learn Mermaid diagrams as code

Learn Mermaid in 15 minutes: the flowchart and sequence diagram syntax that covers most work, plus the best videos, books, and docs to go deeper.

Learn HTTP Status Codes


Branching diagram showing the five HTTP status code classes 1xx through 5xx

Learn HTTP status codes with five mental models: a mnemonic for all five classes (1xx-5xx), the codes you'll meet most, and how to read them with curl.

Learn Amazon EMR


Learn Amazon EMR basics for big data processing in the cloud. Discover the primary use cases, core concepts, and resources to get started.

Learn Amazon IAM


Learn Amazon IAM fundamentals for secure access management in AWS. Discover the core concepts, best practices, and resources to master this essential security service.

Learn Amazon S3


Learn Amazon S3 basics for scalable object storage in the cloud. Discover the primary use cases, core concepts, and resources to get started with this essential AWS service.

Learn Neovim: Practice in Your Browser, Then Set Up Plugins


The words Learn Neovim over an abstract, colorful explosion across a dark code editor window.

Learn Neovim by practicing in real Neovim in your browser, then set up plugins with vim.pack, lazy.nvim, or LazyVim. Includes a searchable command reference.

Learn Software Architecture


Let's learn about software architecture. We'll discover is use cases. Then we'll dive into common architectures, diagrams, and frameworks.

Learn Asymptotic Notations


Learn Asymptotic Notations to estimate, communicate, and optimize the efficiency and performance of algorithms.

Learn Kubernetes


Learn Kubernetes basics to navigate the high digital seas. No acronyms, no buzzwords, no bullshit.

Learn Amazon EC2


Learn EC2 basics and the primary topics you need to know when getting started with the Amazon EC2 service. Discover the primary use cases and more.

Learn Java Coding Challenges


Learn Java Coding Challenges to level up and ace your next interview. Practice makes perfect, so let's do it!

Learn Rendanheyi


Learn Rendanheyi to rethink how you run your business in the world of constant change. Do you need a micro-enterprise?

Learn ECS


Learn Amazon ECS; Simplify your container workloads with Amazon's managed Docker solution.

jq Cookbook: Practical jq Use Cases and Examples for Parsing JSON


The jq logo beside a JSON document being filtered down to a few fields.

jq use cases and a tested cookbook for parsing JSON: when to reach for jq, select and filter, reshape objects, group and sum, and convert JSON to CSV.

Learn 3D Graphics


Learn 3D Graphics to supercharge your web application development. Let's explore the basics of 3D graphics and get started today.

Learn systemd: Units, Timers, and journalctl


A terminal showing systemctl status output for a running Linux service.

Learn systemd by doing: the systemctl commands you need daily, reading logs with journalctl, writing a service unit, and replacing a cron job with a timer.

Learn JavaScript


Learn JavaScript to expand your skillset and become a better developer. This comprehensive guide covers the basics, use cases, and advanced topics.

Learn GitHub


Learn GitHub to supercharge your development process. GitHub is the premier code management tool, and it keeps getting better.

Structurizr Examples: C4 Diagrams With the Structurizr DSL


Structurizr diagrams of a software system drawn at several C4 zoom levels.

Structurizr examples for every C4 view: system context, container, component, dynamic, and deployment, written in the Structurizr DSL and validated.

Learn Design Systems


Learn design systems for fun and profit! Do you want to maintain a consistent professional design that makes your brand sparkle? Try a design system.

Learn Java


Learn Java for fun and profit! Learning Java is a great way to expand your skill set with a deep library of modules.

Learn Software Design Patterns


Learn software design patterns for fun and profit! Are you facing a complex problem? Try using a design pattern to save your time and sanity!

Learn How To Prioritize


Learn how to prioritize for fun and profit! If you have a million tasks on the mind, relax with me, and learn a better way.