Understand the difference between Strategy and Tactics.

Strategy is a game plan for the race. Always develop a game plan before the start - and get your crew's input on it. Or at least tell them what it is . You decide where you want to start on the line and which side of the course you want to be on that first weather leg. Your initial strategy should answer the question, "If there were no other boats, what would be the fastest way to get around the course?"

Tactics are situational. They are what you do in the presence of other boats. You can get a head start from books, but there's nothing like experience as a teacher. Knowing when and where to tack or jibe, knowing exactly the capabilities of the boat and your ability to control it - this really only comes with experience.

I think Matt M. said it best, though. Sail Clean. Clean air, clean water, no mix-em-ups with other boats. Boats that sail close together, go slow together.