Here's how it's done: Place you back foot in the middle of your board, and your front foot on the tip of the nose. Push down really hard on your nose and slide you front foot towards your tail. Remember to push extra hard on your nose because it's always harder to get height off of it. Keep your weight centerd and land cleanly on the trucks and ride away nice and smoothly . If you still don't get it, just remember that it's an ollie except you're using the opposite feet. That's about it.
Remember, if you are trying to clear an object going nollie or fakie, start the pop earlier so you can clear it without hitting your tail/nose.