DO: Get some seat time before trying to drive it fast.
Know that the lighter you are, the faster you go...ie full tanks, number of people etc.
Know that the boat does not turn on a dime at speed. It is point and shoot.
Pay close attention to wind and water conditions. High speed+ high wind+ rollers can kill you.
Always wear a life jacket.
Make a face like :P when you blow by other boats.
Dont: Drive the boat beyond your abilities.
Overtrim the boat.
Suddenly chop the throttle if it gets loose or you run out of balls.
I am sure that others may have more pearls of wisdom than I however, a little common sense will take you a long way. ENJOY!