
Don't listen to the other guy about guitars.
If it's your first guitar,
(unless you plan on playing shows with it)
just buy a guitar that you feel comfortable playing and that sounds good to you.
If you're going to spend a lot,
then it just depends on what style of music you want to play.
As for tapping,
you hammer on to the preferred note with the index finger of your strumming hand.
Then,
your finger still pressing down on the string,
slide it off perpendicular with the frets,
kind of picking the string at the same time.
Hope I was helpful.