ok, i'm very "new" to the boating world and want to learn the "rules" of the water. i'm going to take a boater's safety course but haven't found one yet. is there a website that explains what all the different buay's (sp) mean, and all of the different sign's? i do most of my boating on the river and see all kinds of sign's, different colors, shapes and numbers and don't have a clue what they mean. any help would be appreciated. thanks