Not only should you learn how to re-enter the kayak if you fall off, but you should practice good paddling technique as well to keep from going in the drink, take less pressure off your muscles, and it will help you enjoy your time on the water more. Below are some videos that helped me.
http://www.youtube.com/watch?v=g2a2xu2VRxc
http://www.youtube.com/watch?v=5YeduKtjFxA
http://www.youtube.com/watch?v=NmaNB...eature=related
http://www.youtube.com/watch?v=_sP2cYu0NX8http://www.youtube.com/watch?v=0LLg3...eature=related
http://www.youtube.com/watch?v=uPL1vPW25kg
Enjoy the new Yak and remember to be safe.