Recently, I was trying to incorporate a few new songs into my jam band's setlist, and needed to find some tab / chord diagrams to a few Stones tunes. I came across this site, and found it to be quite helpful. It's well-organized, easy to navigate, and has TONS of tunes. Some (not all) of the songs have explanations on the techniques that were used to play them, which I found especially valuable - things like drop-tuning, and alternative rhythm chording positions. There's a lot a player can pick up at a site like this - check it out:

http://www.fretplay.com/

Keep those strings buzzin'!!