From the site:
Welcome to pwn.college BETA!
pwn.college is a first-stage education platform for students (and other interested parties) to learn about, and practice, core cybersecurity concepts in a hands-on fashion. It is designed to take a “white belt” in cybersecurity to becoming a “yellow belt”, able to approach (simple) CTFs and wargames.
The philosophy of pwn.college is “practice makes perfect”. Good luck!