I need to sound like the Edge! How do I get that U2 sound?

The sound you want is called 'dotted eights'

You simply tap the tempo of the song.

I have uploaded videos for reference - you would tap for each of my strums at the beginning.

Tap your tempo in: "1, 2, 3, 4"  count as you tap

then pick your notes twice as fast - and you have it!