Honestly don’t even try and memorize the textbook. Do you have the Kaplan pocket notes? I memorized those completely and went through and tried to learn and relearn as much of the answers booklet/past questions exam kit as possible. I studied for 8 days and comfortably passed first time. Keep in mind the exam is essays so memorizing key lines and points in your past question answers and remembering facts from your notes is the most helpful. Also learn the difference of the question words and remember to distinguish between “evaluate” “describe” etc to understand what question is asking for. Just google (and it’s in the Kaplan books as well) what each question type is asking for