When you click on this link you will end up on a really extensive website done by a Wayfarer sailer who goes by the name of "Uncle Al". If I go by the number of pages he has put up, he's been doing it for a long time. This rules college is part of the Wayfarer International website. I'm still in the discovery phase and haven't read all his pages, but so far I'm impressed. Particularly interesting is his photo-based rules explanations and photo-based rules quizzes. All rules have an real photo to illustrate and pictures are used to create a question.
This is more difficult than a clear cut diagram, and approaches the real situations you would come across on the water when you are racing. Further on the website he's put up space for outside questions - and all the rules with links to definitions. This site is definitely worth a look!