Racing Rules
John's RC Sailing Rules and Tactics
VERY GOOD video of the basic rules of sailing here, from Miami Sailing Squadron :Click Here
Thanks to Augie for telling me about this. This is one of the best sites that I have found for rules explanations as it has many diagrams to help you understand. The site is someone difficult to navigate, but well worth the effort. Click Here
Very good animated rules quiz website: Click here
Very good explanation of mark-room rules. Click here