How do you know what notes to play when it says --3---0h2--- etc?

Answer 1

I'll explain it like this, the --3---0h2--- is called tablature it is displayed like this basically,

---------------------------------- High E string

----------------------------------- B string

----------------------------------- G string

----------------------------------- D string

----------------------------------- A string

----------------------------------- Low E string

ok now, the strings on your guitar, if its a six string guitar, are named as so,

(from top.) low E, A, D, G, B, and high E. and the lines on the tab board above are displayed in the opposite corrisponding way, as so(look at the tab board above.) I really hope this helps.