Learn

The roadmap that explains how these fit together and what order to take them in lives on New? — read that first if you have not.

This page is the index. Every section below is one stage of that road, and each one is a place you can drop into directly once you know what you are looking for.

Sections

• Virtual Machines Why virtual machines matter for security practice, how to set one up, and which hypervisor tools to use.
• Linux The Linux fundamentals security work is built on: filesystem, permissions, and processes.
• Networking IP addressing, protocols, and the tools used to inspect network traffic.
• CLI & Scripting Bash fundamentals and enough Python to automate real work from the terminal.
• Web & System Fundamentals How HTTP works and the system-level concepts behind most real-world vulnerabilities.
• Windows & Active Directory Why Windows and Active Directory matter for security work, and what this section covers.
• Cryptography What cryptography actually guarantees, why it matters even if you never write your own, and where it shows up in CTFs and real breaches.
• AI What language models and agents actually are, how agent systems are built, and why they are both a tool and a target.
• Specializations An overview of the security specializations to pick from once the basics are down.