Start Here

Welcome to Tutorials Technology — practical, tested tutorials for developers, sysadmins, and tech professionals.

With 250+ articles across Docker, Python, Go, Linux, security, and AI, this page helps you find the right starting point for your topic.

Learning Paths

Docker & DevOps

Go from zero to production-ready containers:

  1. Docker daemon.json Complete Guide — All Options with Examples — Beginner
  2. How to use Nginx as reverse proxy with Docker — Beginner
  3. Docker Configuration Troubleshooting Guide 2026 — Intermediate

Python Development

From language basics to production web APIs:

  1. What is a virtualenv and how to install it — Beginner
  2. How to check Python version the proper way — Beginner
  3. How to switch between multiple Python interpreters — Beginner
  4. Fast bulk insert with SQLAlchemy — Intermediate
  5. Flask REST API Complete Guide 2026 — POST, abort, gunicorn, nginx — Intermediate
  6. Most Common Python Errors and How to Fix Them — All levels

Go (Golang)

Build reliable Go programs and fix common errors:

  1. Installing Go on Linux — Beginner
  2. Go project skeleton — Beginner
  3. Golang: convert string to int — Beginner
  4. Golang: convert rune to string — Beginner
  5. go mod tidy explained — Intermediate
  6. Most Common Golang Errors and Fixes — All levels
  7. compile: version does not match go tool version — Fix — Quick fix

Linux System Administration

Essential skills for Linux sysadmins:

  1. How to add a swap partition on Ubuntu — Beginner
  2. Setup SSH keys for authentication — Beginner
  3. How to Restart SSH in AIX: startsrc, stopsrc, lssrc — Intermediate
  4. How to Blacklist Nouveau Driver (Ubuntu, Arch, Fedora) — Intermediate
  5. Docker daemon.json Complete Guide — Intermediate
  6. db2stop Command Guide — Stop IBM DB2 Safely — Intermediate
  7. IBM DB2 Administration Cheatsheet — Reference
  8. nmcli Cheatsheet — Reference
  9. systemctl Cheatsheet 2026 — Reference

Security & Kali Linux

Ethical hacking, wireless security, and penetration testing:

  1. How to make a Kali Linux USB — Beginner
  2. The best Kali-compatible USB WiFi adapters 2026 — Beginner
  3. Using Alfa AWUS036NHA with Kali Linux — Beginner
  4. RTL8812AU Kali Linux 2026: Monitor Mode & Packet Injection — Intermediate
  5. Aircrack-ng WPA2 Handshake Tutorial — Intermediate
  6. Password Cracking Tools in Kali Linux 2026 — Intermediate
  7. Hashcat GPU Benchmark 2026: RTX 5090, 4090 Speed Table — Reference
  8. Best GPU for Hashcat 2026 — Reference
  9. How to Install Nessus on Ubuntu 2026 — Intermediate
  10. Reset Nessus Password via CLI: nessuscli fetch --reset — Quick fix

AI for Professionals (Non-Technical)

Practical AI guides for people without a coding background:

Legal

Education

Management & Business

Healthcare

HR & Recruiting

Small Business & Marketing

AI Literacy (For Everyone)

Quick Solutions — Most Searched Fixes

Fast copy-paste answers to common errors:

ErrorFix
compile: version does not match go tool versionFix guide
function main is undeclared in the main packageFix guide
error for wireless request "Set Mode" (8B06)Fix guide
SAP Error 00058: Entry does not existFix guide
db2stop force — how to stop IBM DB2Fix guide
Failed: Module DevicePowerOn power on failedFix guide
esxcli hardware pci pcipassthru listGuide
Nessus password reset (nessuscli)Fix guide
Python pip command not foundFix guide
GPG signing failed: Inappropriate ioctl for deviceFix guide

Browse by Category

All tutorials are tested on real systems and updated for 2026.