Learn how to push yourself, get on the board with your feet in the right position and how to get off in a safe way.
Learn everything about the most stable basic position for surfskating and surfing. This technique is based on the biomechanics of surfing and will most likely change your surfing.
Learn how to do a basic frontside turn. Frontside on a wave means facing the wave, leaning on your toes. If you're goofy this means going left, for regulars it means going right.
Learn how to do a basic backside turn. Backside means with your back towards the wave, leaning on your heels. For goofy footers this is going right, as for regular footers this is turning left.