The best advice I could give you is to determine what you want to play and have a friend show you how to play it. If you don't know anyone who can play the songs you want to play, buy the sheet music, and try to do it yourself.
Most rock songs (outside of the solos) are fairly easy if you know the full chords and the 7ths (the A and E minor chords are common, as well). Also, for rock songs, learn to play the A and E bar chords. For songs with more picking and less strumming, learn a couple of common picking patterns. Some of those songs are surprisingly easy when you have the picking patterns down and you know the standard chords.
I am lucky enough to be able to play the A chord with my first finger only. It's easier than having to use three fingers.
Of all the rock music I've played, the Beatles stuff is the most difficult.
Good luck! :wave: