Tutorials
Step-by-step technical guides on Docker, Linux, Python, Go, and more.
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Cursor AI v3: Complete Guide to Background Agents and Subagents (2026)
Master Cursor AI v3 in 2026. Background Agents run async while you code, Subagents parallelize large refactors, Plan Mode reviews before executing. Teams report 20-40% faster delivery.
Cursor vs Claude Code vs GitHub Copilot: Honest Comparison (2026)
Cursor v3 vs Claude Code vs GitHub Copilot in 2026. Benchmark results on real coding tasks, pricing, context windows, and when to use each. Honest verdict for developers.
Docker Multi-Stage Builds: From 1.2GB to Production-Ready Images (2026)
Docker multi-stage builds tutorial 2026. Reduce Python images from 1.2GB to 120MB, Go binaries to 5MB with FROM scratch. Size comparison table, cache optimization, and GitHub Actions integration.
GitHub Actions CI/CD: Python + Docker + VPS Deployment (2026)
Complete GitHub Actions CI/CD tutorial 2026. Test Python, build Docker image, push to GHCR, deploy to VPS via SSH. Includes dependency caching, OIDC secrets, matrix builds, and local testing with act.
Hashcat Advanced Tutorial: Masks, Rules, and GPU Optimization (2026)
Hashcat advanced tutorial 2026. Mask attacks, rules with OneRuleToRuleThemAll, hybrid wordlist+mask attacks, WPA2 cracking workflow, session management, and GPU optimization for maximum speed.
Kubernetes for Beginners: First Deployment with kind (No Cloud, Free, 2026)
Kubernetes tutorial for beginners 2026. Use kind to run a local K8s cluster with Docker — no cloud account, no cost. Covers Pods, Deployments, Services, ConfigMaps, Secrets, and HPA.
Neovim as a Modern IDE in 2026: LazyVim, LSP, and Essential Plugins
Turn Neovim into a full IDE in 2026 with LazyVim. Mason installs LSP servers, nvim-cmp provides completion, Telescope fuzzy-finds everything, conform.nvim formats on save. Python, Go, TypeScript ready.
Nmap for Sysadmins: Network Scanning and Security Audit Guide (2026)
Nmap tutorial 2026 for sysadmins. Beyond nmap -sV: NSE scripts for TLS audit, CVE detection, EternalBlue check, network inventory, and ndiff for tracking infrastructure changes.
OpenTofu vs Terraform 2026: Migration Guide and Feature Comparison
OpenTofu vs Terraform in 2026. BSL vs MPL 2.0 license, state encryption, CNCF backing, and step-by-step migration guide. Boeing, Capital One, AMD run OpenTofu in production.
Podman Rootless Containers: Docker Without Root or Daemon (2026)
Podman rootless containers tutorial 2026. Run containers without root or Docker daemon on RHEL/Fedora/Ubuntu. Compatible with docker-compose.yml via Podman Compose. Quadlet for systemd production deployments.