The #1 tip I can give you to being a star student in your AP English class and ace the exam is to read read read! If your teacher assigned you summer reading to do before taking the course, then you absolutely must do it. I know, summer feels like the time to party and spend time with friends, but if you want to embark on a course like AP English, then you absolutely must do all the prior reading. If your teacher hasn’t assigned you any summer reading, then find a suggested list of AP English books that will help you on the exam. There are some great classics in there and that way you can be choosy and pick 3-5 novels that you will enjoy. If you’re taking summer classes or do not have a time to work, then I suggest you read at least 5 pages every night before going to sleep. Keep a reading diary to remind you of your initial reflections on the reading. Nearing the exam, reread your notes for the novels and skim through book summaries. If you do all of this prior to the exam, you will have nothing to worry about.
Independent research on the academic benefits of the Advanced Placement English Language and Composition course indicates that not all students receive academic benefits from participating in the course. In a study with a sample size of over 90,000, the authors found that students who took the AP English Language and Composition course did not receive any increase in academic achievement unless they also prepared for and took the AP test. The authors controlled for over 70 intervening variables and found that AP students who took and passed the English Composition and Literature exam had ACT scores that were points higher than non-AP students or AP English students who did not take their course's AP test.  This led the authors to state that AP participation "... is not beneficial to students who merely enroll in the courses ..."  :p. 414