A backside is another very basic move. A backside is just like a frontside only your back is facing what you are grinding. For this move you will want to come the opposite way that you do for frontsides. Before you trie sliding try just stalling it a couple of times. When you are ready to grind it come up at a slow speed just to start off. Then jump to the side for momentum and turn the full 90 degrees and lock on with your too middle wheels. Then just jump off. It may feel different at first but keep with it.