I took El-Alaoui for 6A Summer 10 and 6C Spring 11. He is a pretty good professor. Sometimes his lectures are not very clear, but he's really nice about answering questions in class. His exams are similar to homework and he has review sessions before each exam which helps a lot to summarize the material and to ask more questions. He doesn't post old exams, but he does post hmwk solutions as well as practice problems (w. solns) for each chapter. Study these and you'll be fine.