A good way to study the code is to read each paragraph or section and write your own question dealing with the one or two most important aspects of the section you just read. Make sure you include five possible answers, with only one truely correct answer. If you are not sure you understand the requirement, read the commentary.
The chances are that if you will pick out the most important information and a similar question will be on the test. The exercise will also make you more fmiliar with where the information is located in the applicable code. Knowing where to find the information is more important than memorizing th information.
Best regards - Al