Nose slide: This trick is where you ollie off the ground, turn the skateboard sideways, and then land on the edge of some object. You slide along with only the nose of the skateboard touching, and then ollie off.
Begin by rolling up alongside (parallel) to the object that you are going to nose slide on. Stay about a board length away from the object.
Ollie and then use your feet to rotate the skateboard so that the front end of the skateboard lands on the edge of the object that you are going to slide on.
Let the nose of the skateboard slide along the object until you slow down.
Ollie off, rotate the board back to its normal position, and land.
Tip: You can practise landing properly on the object by standing on your skateboard beside it, and ollieing up on to the object. This will be easier than trying to ollie onto it while you are moving.