dont worry about theory if u dont want to. Guitar is suppose to be fun and if your not having fun forget it. It is however benefitcal to know thoery and everything else that isnt that fun to learn. Somethings you really should learn or else you ll find a hard time picking up the guitar. You should learn at least how to read tab, finger positions and few chords stuff like that. There is losta threads on this site about easy songs to play, just go to search and type it in.

good luck and all the best!