Tapping involves you using you picking hand (in most case the right) in order to hammer on to the string...One tip I can give you is to use your index finger (sometimes named your f*ck-off finger), this means you don't have to disguard your plectrum in order to hit the string...
Basically all you do is, instead of picking the string, you hammer on (thus making it a fretted note) and then pull off...
e.g.
e-T12--p4-h7---T12--p4-h7---
T = Tap with righthand finger (asuming your right handed)
p = Pull off
h = Hammer on
There's a very quick run through...just drop me a line if you need anymore help...Check out one of the hosts too, I forget which one though...Think Schmange did some basic tapping licks before going on to the REALLY hard stuff (all fingers)
Don't worry too much about me, ignore me long enough and I'll go away.
