I'm currently a Computer Science (Cyber Security) student. Right now, one of the things we're learning about is HTML, CSS and JS.
I've had this domain for a while now, and this seems like a good use for it.
I have a few hobbies myself. Here's some that I can think of right now:
Football
Computer Networking
Virtualisation
Exploring operating systems
Karaoke (not sure why people don't try this more often!)