These are pretty good videos. But it will take a bit of practice to teach your body, and grow the neural connections that maky your instantly responsive to the constant movement.
Getting to the beach and riging it properly.
Next on the water, how to stay on the water and move.
Again from another instructor:
And before you even think about going, get the board and put it in the water, then stand around on it long enough and frequent enough so that your brain can grow the connections to the muscles for balance....,