Don't let sum41 fool you. There are only 'the backstreetboys' in another outfit. The two hand tapping is a cool trick to show off, indeed, when you can do it properly, not just by tapping on your fretboard whitout even knowing what note you just tapped. If that are your ideals to play guitar, you should better stop playing, no offence. But if it helps you to pick up the guitar and play some tunes, be my guest.

And if the snaress leave red marks your on your way to have this nice thick, hard coat on our fingers, but aren't there yet. I've heard women find it rather attractive. So keep practising ! :)