Tutorials
Step-by-step technical guides on Docker, Linux, Python, Go, and more.
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WireGuard VPN on Linux: Complete Server and Client Setup (2026)
Set up WireGuard VPN on Linux in 10 minutes. Configure server, generate keys, add multiple clients, provision mobile via QR code, add pre-shared keys for post-quantum resistance.
Aider: AI Pair Programming from the Terminal — Complete Guide 2026
Complete 2026 guide to Aider, the AI pair programming tool for your terminal. Connect to Claude or GPT-4o, auto-commit changes with git, use architect mode, and manage costs.
Ansible for Linux Sysadmins: Automate Server Configuration with Playbooks (2026)
Learn Ansible for Linux sysadmins. Install Ansible, write your first playbook, use roles, manage inventory, and automate server configuration in 2026.
Claude API with Python: Complete Tutorial 2026 (Messages, Streaming, Vision)
Learn to use the Claude API with Python. Complete 2026 guide covering messages, streaming, vision, tool use, and async. Install anthropic SDK and build your first AI app.
CrewAI Tutorial 2026: Build Multi-Agent AI Systems in Python
CrewAI tutorial 2026: build multi-agent AI systems in Python. Create agents with roles, assign tasks, use tools, and run sequential or hierarchical crews with local Ollama models.
Docker vs Podman 2026: Which One to Use and Why (Practical Guide)
Docker vs Podman in 2026: architecture differences, security, compatibility, rootless containers, and which one to use for your use case. Practical comparison.
Embeddings Explained: What They Are and How to Use Them with Python and Ollama (2026)
Learn what embeddings are and how to use them with Python and Ollama for free. Generate embeddings with nomic-embed-text, compute cosine similarity, build semantic search, and store in pgvector.
FastAPI Tutorial 2026: Build a REST API with PostgreSQL, Auth, and Async
FastAPI tutorial 2026: build a production REST API with PostgreSQL, JWT authentication, and async endpoints. Complete guide with Pydantic models, testing, and Uvicorn deployment.
Go Concurrency: Goroutines, Channels and sync.WaitGroup with Real Examples (2026)
Master Go concurrency: goroutines, channels, sync.WaitGroup, Mutex, select, and worker pools with real-world examples. Avoid common mistakes.
Go REST API with Gin: From Zero to Production (2026)
Build a production-ready REST API in Go using the Gin framework. Includes routing, middleware, JSON responses, PostgreSQL integration, and Docker deployment.