When you get here head over into where Cruller is (off to the right) and talk to him to get a canoe, you'll encounter a scene along the way. After Cruller gets you a canoe you'll be standing by it, press 'Y' to get in. There's a few Psi-Cards you may see on your way that you want to try to get, but you can't really yet, just get them after you learn how to levitate. So head straight ahead and after the big rock make a right out to the floating dock.
As you approach the dock you'll automatically get off your canoe. Walk towards everyone and a scene will occur. Talk to Agent Vodello to start your levitation training.