1. Skate. Learn this moving because it sucks if you learn it still, then have to relearn it moving. Have your front foot just behind the front truck bolts.
2. Reach your front hand down and grab the heel edge of the board sorta behind your front foot. You should be a little bent over. Take it.
3. Take your back foot off the board and slam it onto the ground in front of you (on the toe side). Use this to jump off the ground, keeping the board under you with your front hand. This will be sort of hard at first, since you can't really get a strong extension with being bent over, but you'll get the hang of it.
4. Tuck up your back foot and put it back on the board, then release the grab and extend your legs slightly (push the board towards the ground). Do this really fast. Pushing the board down is really important, 'cause I didn't once and my knees slammed into my chest and I hurt like a bitch. An' it'll hurt you too, so shut up.
Once you get this down, you'll be going pretty high. I can do this higher than I can ollie, but I can only ollie like 2.5 feet. Don't be a wus and land one footed, 'cause then you'll build up this fear of landing with both feet on and you'll never get it. Uh, good luck (?).
Oh yeah, to do this backside grab the toe edge of the board and kick the ground behind you. I can't do this, but I'm sure it's possible.