Well, you're better than me, so I'm impressed :) I'm just learning the very basics of guitar. I'm a bit better at piano but have a lot to learn yet.
Thanks for the tips on push-ups. That helps a lot! I'm probably going to start with these tomorrow, most likely starting with just the basics and working in some variations over the next few weeks.
Yeah, that's a good approach. Work in new exercises as you get used to the ones you're already doing. If you do regular and tricep pushups it will help considerably with the shoulders and upper arms. One important thing that it won't get is the biceps, which you will need either weights, a strap, or pull-ups for. Do you have something you can do pull-ups on? You can vary pull-ups in the same way you vary push-ups, and pull-ups unlike push-ups can be used to target the biceps as well, if you use a reverse grip (palms facing towards you). If you're not strong enough to pull your whole body up that way, an easier variation is to find a stick that can support your weight, hang it between two chairs, sit on the floor under it, and pull yourself up from that position. Between pull-ups and push-ups you can get most of the muscle groups in the shoulders and upper arms.
Hey, everyone has to start somewhere! I don't know much about playing piano...that's something I should probably learn someday. It'd help with music theory, if nothing else.
Guitar is a lot of fun, though! Any particular style you're concentrating on?