I wanted to share a powerful new Advanced Placement resource with you called Varsity Learning Tools. It is a comprehensive suite of completely free practice tests, digital flashcards, and questions-of-the-day: https://www.varsitytutors.com/free-advanced_placement-resources.
Varsity Learning Tools provides more than 100,000 individual problems and thousands of practice tests across 150 subjects, including AP Subjects. To date, students have completed more than 40 million problems on the Varsity Learning Tools platform. Each question is tied to a specific academic concept, which means that students can pinpoint their particular strengths and weaknesses in almost any area. For on-the-go studying, we also have more than 40 mobile apps that students can download for free, with no account setup required. See more on our mobile apps here:http://www.varsitytutors.com/apps.