Here's how to do it: The 360 flip involves the board spinning a 360 shove it, and flipping over once. Place your back foot on the tip of the tail for and extremely hard pop, and your front foot in the kickflip position. Start moving along at a moderate to high speed, and pop as hard as you can to start the 360 shove it motion. While doing this, drag your front foot forward to start the flipping of the board. Think of just flicking the board, in order to keep the board under your legs properly. Wait until the board has finished the 360 shove it and kickflip, land on the trucks, and ride away.
This trick tip doesn't explain much because it's mandatory to watch someone do this trick in order to get a better understanding. This trick might take a while to learn, so keep at it!