Well, obviously the better the guitar the easier it'll be.

As for equipment etc... the tutorial goes into most of that.

Basically, if you can get hold of a compressor it will greatly help your tapping as it evens out the sound and provides more sustain. (it's also very forgiving of uneven playing).
Some reverb will also help to blend the notes together a little.

Other than that, lighter strings lowered as close to the fretboard as you can without buzzing will also help. As well as the scrunchy thing if you can train yourself to move it quickly out of the way when you need to use open strings.