Tutorials
Step-by-step technical guides on Docker, Linux, Python, Go, and more.
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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.
Kali Linux for Beginners: Installation, Initial Setup and First Steps (2026)
Kali Linux for beginners: how to install Kali Linux in 2026, initial configuration, essential tools, update system, and start with ethical hacking basics.
LangGraph Tutorial 2026: Build Stateful AI Agents with Python
LangGraph tutorial 2026: build stateful AI agents in Python using StateGraph, nodes, edges, and checkpointers. Full ReAct agent example with tool calling and human-in-the-loop.
LiteLLM Tutorial 2026: Use OpenAI, Claude, and Ollama with One Python API
LiteLLM tutorial 2026: call OpenAI, Claude, Gemini, and Ollama with one unified Python API. Setup proxy server, fallbacks, cost tracking, and load balancing.
n8n + AI on Linux: Self-Hosted Workflow Automation with LLMs (2026)
Run n8n on Linux and automate workflows with AI and local LLMs. Install n8n via Docker, set up AI Agent nodes with Ollama, build real automations, and run as a systemd service. Free 2026 guide.
Ollama on Linux: Run Local LLMs, Manage Models and Use the API (2026)
Complete Ollama guide for Linux: install, run LLMs locally, manage models, use the REST API, Python integration, and GPU acceleration with NVIDIA or AMD.
Ollama + Open WebUI on Linux: Run a Local ChatGPT Server (2026)
Set up Ollama and Open WebUI on Linux for a free self-hosted ChatGPT alternative. Run llama3.2, mistral, and qwen2.5 locally with GPU support and nginx reverse proxy.
OpenAI Function Calling in Python: Complete Guide 2026 (Tools, Parallel Calls, Streaming)
Learn OpenAI function calling in Python 2026. Define tools, handle tool_calls, run parallel function calls, stream with tools, and build a real assistant with weather and calendar tools.