Most Helpful Guy
Most Helpful Girl
4 chapters, no problem.
Read all 4 chapters, make some notes on the key ideas and concepts from each chapter.
Make some flash cards and study the key ideas and concepts from each chapter. By breaking them down, you are lessening what you need to actually know.
A lot of times chapters will have key learning objectives. Use those things to help guide what you need to focus on. Use course notes if possible and see what the teacher stresses as important.