Hi all, I've been playing for a pretty long time, but I've never had any instruction minus what I've read or picked up from other musicians, so I'm not as good as I'd like to be in alot of areas. I play fingerstyle and slap. I've never really learned how to play with a pick. I can groove well and I have a good sense of timing, but I'm not very fast at all, and my lack of musical theory is starting to hinder me. So I've been reading the scale/chord theory lessons on here and other places and trying to expand the types of music I play. Anyway, here's my questions: 1. I tried for the first time this week to play a metal song (Iron Maiden's Invaders) and realized how woefully slow I am. I'm kind of ashamed to admit that I have real trouble with this song. The opening riff and the verse riff totally kick my ass. Are there specific exercises I can do to improve my speed? Mostly I've just been trying to play it really slow and get the timing perfect and then speed it up little by little. 2. I was reading a lesson on Wooten's double thump technique but there's something I don't understand. If you watch him it looks like he's slapping the strings, but the lesson I read implied that it was more of a pluck with the thumb, followed by an upwards pluck? Is it slap or pluck? 3. Also was reading a lesson on another site on tapping techniques, and I absolutely cannot make my hands move independently of one another. I get the rhythm riff going with my left hand, but the instant I try tapping with my right hand, my left hand wants to follow what my right hand is doing, if that makes sense. Has anyone else had this problem while learning to tap, and how did you overcome it? 4. What the hell is the circle of fifths? I did a search on here and on wikipedia and I'm still lost on how to apply it to my practice routine. I'll be honest I didn't completely understand the wikipedia entry. I'm really trying to expand my abilities and knowledge and I'd appreciate any help you guys can provide. Thanks!