The always handy Lifehacker has pulled together resources that will teach you to play guitar, drums and piano. Some of these lessons are taught via video, others with podcasts. And if you’re looking to teach yourself music theory, then head over to Musictheory.net. They’ve got you covered.
As a saxophone player (and therefore trained to read music & know theory) I can only pray that some of my guitarist/drummer friends read all this!
Joke: how do you make the guitarist turn down? Give him some music to read.
Feel free to forward the info to any and all friends. I’ll have no objections :)