I'm looking just to be able to accompany myself decently on the guitar, not really more than that. I already know a few basic chords, and I can fingerpick, but I'm limited to just one or two patterns of strumming and picking. Mainly, I'd like to be able to pick. I'm not sure how to proceed now. What books would people recommend? And what else can I do now? My guitar skills haven't been developing for a while now, they're stuck at this I-can-just-about-play level.