Luckily there are theory courses at my school ( yay).

Theory doesnt actually make you a better guitar player.... but a better musician and knowledgebale person over all. You don't need a teacher.... and some of the greatest guitar players didnt know theory... its all up to you...

I rather sit at home learning myself.... but i also know some theory and im going to be learning more.

But what counts is that your going to be having fun doing waht your doing.