Start by doing the things you should have done but didn't have time for. Read any parts of the book you didn't have time to read when they were assigned. Study any of the homework solutions handouts that you haven't studied carefully.
Before dealing with problem-solving, try to firm up your conceptual understanding in any areas where you feel weak. If you have bought one of the suggested supplementary books, read the relevant sections.
Write up a concise, organized set of notes. Next to each equation, write the definitions of the variables and the physical situation that the equation describes, and notes on under what conditions the equation would or would not apply. I don't think more than one page of notes is necessary for the whole course; if you find yourself writing more notes than that, you are probably overestimating the amount of memorization that is required and writing down a lot of equations that can be derived from more fundamental principles. Comparing notes with another student or going over them with me can be very helpful.
Once you feel fairly firm on the concepts, focus your effort on any particular problem-solving techniques with which you are having trouble. Look at the homework solutions and figure out what was going on in any cases where you were unsuccessful in applying the technique in question. Then work a new problem for which you have access to a solution. If you faithfully apply these methods for studying but find yourself completely confused on a certain point, it is not an efficient use of your time to keep on staring at the same thing.
