PRACTICE EVERYDAY:
Adrian Dingle's AP Question Bank- Has many questions broken down by Topics (previous AP system till this year) and he will probably update it to the new system soon. Questions provide feedback and scoring.
College Board's AP Chemistry Exam Tips- Provides useful tips and tricks for test day and for preparation.
AP Chemistry Course Description
Our AP Classroom is also an invaluable source of practice tests and questions that you should utilize.
If you want a review resource outside of materials provided in class here are a few that I have heard good things about (NOTE: These are all options that you can elect to use but I am not recommending that you should buy them. Just presenting them as good resources should you feel the need.):
Resources created by other teachers for review for AP Exams