Tutorials

Step-by-step technical guides on Docker, Linux, Python, Go, and more.

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8 min readIntermediate

TypeScript for JavaScript Developers 2026: From Types to a Typed REST API

TypeScript tutorial for JavaScript developers 2026: type annotations, interfaces vs types, generics, tsconfig.json strict mode, and build a typed Express REST API. Node.js 22 runs .ts natively.

9 min readIntermediate

Vibe Coding 2026: Build a SaaS with Claude Code Without Writing Most of the Code

Vibe coding tutorial 2026: use Claude Code to build a real SaaS MVP — FastAPI backend, React frontend, Stripe payments, and Postgres — in hours instead of days. Includes prompt engineering tips and when to intervene manually.

9 min readAdvanced

Zero Trust Architecture for Developers 2026: mTLS, Short-Lived JWTs, Vault, and Network Policies

Zero Trust Architecture tutorial for developers 2026: implement mTLS between microservices with cert-manager, issue short-lived JWTs with HashiCorp Vault, enforce Kubernetes NetworkPolicy, and replace your VPN. Open-source tools only.

15 min readIntermediate

Argo CD GitOps Tutorial 2026: Deploy Kubernetes Apps from Git

Learn GitOps with Argo CD in 2026. Install Argo CD, connect Git repos, deploy Helm charts, configure RBAC and SSO, and implement the app-of-apps pattern for multi-cluster deployments.

22 min readIntermediate

Context Engineering for AI Agents 2026: The Complete Guide

Context engineering is the technique that raises AI agent success rates from 30% to 90%. Learn how to design context windows, implement RAG, manage memory, and build reliable AI agents in 2026.

18 min readIntermediate

Crossplane AWS Tutorial 2026: Kubernetes-Native Infrastructure Provisioning

Learn Crossplane in 2026 — the CNCF top IaC trend for Kubernetes-native infrastructure. Provision AWS RDS, S3, and VPC using Crossplane Compositions, manage cloud resources as Kubernetes CRDs, and compare with Terraform.

21 min readIntermediate

eBPF and Cilium Tutorial 2026: Kubernetes Networking and Security

Learn eBPF and Cilium in 2026 — the #1 Kubernetes networking trend. Install Cilium as your CNI, write network policies, use Hubble for observability, and replace kube-proxy with eBPF.

17 min readIntermediate

K3s Tutorial 2026: Run Kubernetes on a Raspberry Pi or 1GB VPS

K3s is the lightweight Kubernetes distribution with 200% YoY growth. Install K3s on a Raspberry Pi or 1GB VPS, deploy apps, configure persistent storage, set up Traefik ingress, and add worker nodes.

13 min readIntermediate

Building a Local LLM Machine in 2026: Complete Hardware Guide

Complete 2026 guide to building a PC for running local LLMs. GPU VRAM requirements, RAM, storage, three full build examples from $800 to $6000, and Ollama/llama.cpp setup.

20 min readIntermediate

Build an MCP Server in Python: Complete Tutorial 2026

Learn to build a Model Context Protocol (MCP) server in Python from scratch. Expose tools, resources, and prompts to Claude and other LLMs with the official MCP SDK.