If a serve touches the net is it good?

Answer 1

If you are playing a point and you hit a shot that hits the next and lands on your opponent's side it's your point. If you are serving and the ball hits the next and goes into the service box it's a let and you take another serve for the serve that just hit the net. If your serve hits the net and lands out of the service box it is a fault.

Answer 2

Yes, as long as it makes it over the net. It's allowed to touch the tape at the top of the net and then trickle down. Those are actually some of the hardest serves to return.