Tor, Anonymity and being a total tech scrub

Hi All!

Despite growing up with computers basically all my life, I realised that I know literally bugger all about how they actually work.

I have a gap year so instead of indulging in the steam summer sale I thought I'd try to learn a programming language (at least the basics) and just how computers work

as I have been digging around I learned about Tor, and it sounds like a great idea, apart form all the *stuff*, basically limiting how far down the rabbit hole you go has been the no 1 rule i've got from dark net stories etc

so I guess my question is is Tor Illegal to use in the UK? moreover, seeing as I don't own my own internet access (hooray for living with parents) would it get them into a spot of bother with the law?

also what's the best (most relevant or easiest to learn) language for me to take a whack at? I've narrowed it down to Java or Python, but heck you lot know far more about this stuff than me

Cheers!