Nollie
A good nollie all depends on foot placement and how well you pop and suck up the board. Your front foot should be on the nose somewhere. Your back foot should be somewhere near the middle of the board. Basically, you just press down on the front foot while pushing foward at the same time, pop the nose, and drag your back foot towards the tail while sucking up with your front foot. The foot co-ordination is similar to an ollie: pop and suck. Land with your feet over the bolts and ride away.
NOTE: If you are nollieing over stuff nollie earlier than you would when ollieing something.