Resources

last updated 17 MAY 2025.

Platforms

• pwn.college (free)
  • CSE365 dojo
• TryHackMe (free/paid)
• HackTheBox (free/paid)
• HackTheBox Academy
• AttackIQ (free)

CTFs and Wargames

• zaratec CTF Practice links
• wargame-nexus

Foundations

Networking

• 📖 Computer Networks: A Systems Approach
• 🏫 Cisco Skills for All / Networking Academy
  • Network Technician Path
  • Packet Tracer - network simulation tool
• 🧰 GN3S - virtual networking software

Linux

• 🏫 Linux Survival
• 🏫 Linux Path
• 🏫 Terminal Tutor - interactive command line tutorial
• 🏫 Linux From Scratch - Build your own linux system from source code.
• 📖 Linux Command Line for You and Me
• 📖 UNIX and Linux System Administration Handbook
• 📖 The Linux Command Line book
• 📖 Linux Essentials - Linux Professional Institute
• 📖 Linux Command Library - cheat sheet
• 📖 Linux Bash Shell Scripting Tutorial
• 📖 Linux Command Line for Beginners

Python

• 📖 Python Crash Course, 3rd Edition by Eric Matthes
• 📖 Automate the Boring Stuff with Python by Al Sweigart
  • 🏫 Udemy course
• 📖 The Hitchhiker’s Guide to Python
• 📖 Python Programming: An Introduction to Computer Science (Fourth Edition) by John M. Zelle
• 🏫 Codecademy - Learn Python 3
• 🏫 Python Tutor - visualize how the code works
• 🏫 CS50’s Introduction to Programming with Python
• 🏫 Programming with Python - University of Helsinki
• Exercism

SQL

• 🏫 PostgreSQL Exercises
• 🏫 W3Schools - SQL
• 🏫 SQLBolt - interactive exercises
• 🏫 Stanford Online: Databases: Relational Databases and SQL
• 🏫 SQL Murder Mystery - whodunnit?
• 📖 SQL Queries for Mere Mortals by John Viescas

Free courses

• 🏫 Security Blue Team Junior Analyst Pathway
• 🏫 Cyber Security Base - University of Helsinki
• 🏫 Fortinet Training Institute - Free Cybersecurity Training
• 🏫 PortSwigger Web Security Academy
• 🏫 Metasploit Unleashed by OffSec

Other resources:

• TCM Security Academy
• National Institute for Cybersecurity Careers and Studies (NICCS)
• USAJOBS - use keyword cybersecurity to search for what employers are looking for
• Canadian Cyber Centre - Cyber security career guide
• Cyber Seek Career Pathway
• NIST - NICE - Free and Low Cost Online Cybersecurity Learning Content

Math

• 📖 Purplemath
• 📖 Openstax
• 📖 CK-12
• 📖 My post for high school math resources. Follows the Ontario math curriculum
• 📖 Real Not Complex - great math resources from the basics onwards
• 📖 Calculus Made Easy - a classic textbook, updated for use online
• 📖 JUST THE MATHS by A.J. Hobson

AI

• 🏫 CS50’s Introduction to Artificial Intelligence with Python