The lessons

Each lesson is free to read in full. Create a free account to run its commands in a live lab and to sit its quizzes and tasks.

Worked in a real lab

Every lesson of this module is worked in a lab started for you alone. The labs it uses:

Teaching a class? Set this module for your students with a teacher guide, marked assignments and a lab for every student.

Networks in practice: Plan a small office network: addresses, DHCP and DNS, VLANs, sharing the internet with NAT and fixing connections, in labs.
Cyber security in practice: Cyber security in practice: protect accounts, harden a web server, find leaked secrets and investigate an incident from its logs.
Websites and web apps: How a website works, reading and writing data through an API, checking a form, publishing safely and testing accessibility.
Data and spreadsheets to databases: From a spreadsheet to a database: write SQL for reports, clean bad data, chart it honestly and handle personal data lawfully.