Exam 1 will cover course material up through the ROMs/PLAs/PALs lecture. The exercises on the exam will be very similar to what you have seem on homework, so looking over you homeworks again will be one of the most efficient ways you can prepare for the exam.
Here are some "quizzes" from earlier offerings of the course. These are not intended to be 50 minute exams, but something smaller. (1, 2, 3, 4, 5)
The topics covered and where to find exercises related to the in the book: (Note: You are not expected to do all the exercises in the book. Probably the most efficient use of you time would be to pick one or two that look tricky and convince yourself that you can do it. If you find yourself confused by some kind of exercise, try more and/or contact the TAs or the instructor.)