How fit are you really? Before even considering to buy a surfboard or taking professional surfing lessons you should see how good is your overall fitness. In order to surf you should have some good athletic features and realize that only a healthy surfer is able to put up a great performance on the best waves avaiable. Forget the stoned lazy ass surfer stereotype. If you wanna surf you better get fit and quickly!
I found a very good bundle of athletic fat loss and body recomposition videos. They use a variety of methods and exercises that will improve your overall surfing ability. Check them here. They were designed by a swimming coach but they apply very well to surfing. I leave an example for you.