Once you have finished watching the video and completed the notes, start working on your homework since you have all the information fresh inside your mind!
If you have a question, ask your parents and/or ask your teachers during the live session. No question is embarrassing or "dumb." It is better to have an answer than to not know.
During the live sessions, make sure to know what your teachers are talking about and take notes of what you have to do. You don't want to miss anything important!
When a test is coming up, make sure you have the time to study. Practice the material given earlier to refresh your memory.