This is the website for Mrs. Rice. She is the teacher who makes the amazing flipped classroom notes that we used at various points this semester. She has video notes for every unit of study for the entire year. If you have a specific topic you wanted to brush up on, this would be a great starting point.
This site has tons of video lessons. They are arranged by chapters, and have multiple lessons in each one. This would be a great resource to brush up on some of the lessons that may have been more difficult this semester.