a few guys from my town just asked me if i'd wanna jam with them sometime and maybe join their band. now normally this would be great, but the problem is im only 13 and they're in there late 20's/early 30's. i know it'd be a lot of fun to jam with older people and gain some experience, but i'm kinda nervous as to what they'll think of my guitar playing. any advice?
Don't look at it like any kind of trial or competition. We all have been at one stage or another with our playing. If they are true musicians they know this. Apparently they already think well enough of you to ask you to join the band.
Don't try to prove that you are good enough. Relax, do your thing and most importatnly, play WITH the band. A well played hot lick isn't so hot when played at the wrong time.