There's a tapping tutorial here at Guitar Tricks that'll take you through all the basics. It's about 50 pages and there's several solo's and things to try out.. although you'll probably find more help just learning some of the techniques.

http://www.guitartricks.com/2000/trick.php?trick_id=1873&s_id=13
http://www.guitartricks.com/2000/trick.php?trick_id=1961&s_id=15
http://www.guitartricks.com/2000/trick.php?trick_id=2059&s_id=16
http://www.guitartricks.com/2000/trick.php?trick_id=2484&s_id=21

The written portions of the lessons are free but some of the sound files are subscription based so ya may have to pay $5