Reread all his lectures before each midterm and final as well as do every problem he assigns from the book. This should get you a solid B to B+ in the class. Other than that stop by his office hours the day before each exam, i personally found many of the problems he pointed out to be extremely similar to the exam questions.
Too much info on his lecture slides to write down because he goes through them fast. Nice guy and is very helpful, but lectures weren't too interesting.
Contrary to what's been posted, Prof. Levenson is a great teacher. He loves the whole "None of the Above" and "More than One of the Answer Choices is Correct" questions on his exams, which actually aren't that bad as long as you know the material. Do the practice problems and quizzes and you should get an A.
His exams are ridiculously hard (one of the averages was a 51) and he deliberately tries to throw you off on many questions. Not a bad overall teacher, though.
Goes through the material quickly