Production-grade engineering skills for AI coding agents.

Unofficial practice exam for the Claude Certified Architect – Foundations certification. 77 scenario-based questions + interactive Claude Code skill.

Community study guide for the Claude Certified Architect – Foundations certification exam

This repository contains study materials for the **Claude Certified Architect — Foundations** certification.

GitHub Actions workflow for stale branch cleanup with multi-layered safety

The LLM's practical guide: From the fundamentals to deploying advanced LLM and RAG apps to AWS using LLMOps best practices

100+ AI Agents, Agent Skills and RAG Apps - Free and Open Source.

Anthropic's Interactive Prompt Engineering Tutorial

18 Lessons to Get Started Building AI Agents

Cloud Carbon Footprint is a tool to estimate energy use (kilowatt-hours) and carbon emissions (metric tons CO2e) from public cloud usage

Explain complex systems using visuals and simple terms. Help you prepare for system design interviews.

Python best practices guidebook, written for humans.

Clean Architecture Solution Template for ASP.NET Core

Northwind Traders is a sample application built using ASP.NET Core and Entity Framework Core.

freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.