1. SEP 1 - Asking Questions and Defining Problems
2. SEP 2 - Developing and Using Models
3. SEP 3 - Planning and Carrying Out Investigations
4. SEP 4 - Analyzing and Interpreting Data
5. SEP 5 - Using Mathematics and Computational Thinking
6. SEP 6 - Constructing Explanations and Designing Solutions
7. SEP 7 - Engaging in Argument from Evidence
8. SEP 8 - Obtaining, Evaluating and Communicating Information
Bozeman Science - Really comprehensive AP 2 Video Series
https://www.edx.org/ - Online College Courses (mostly free)