If you have a question, always ask! Also, it is important to stay on top of your homework so that you aren't cramming 20+ physics problems in one night before the test (as a note, homework is not really "assigned" but it's strongly recommended that you do it). A lot of the class is going through examples as well as doing labs. Labs are worth a fair amount of your mark, so make sure to try your best on them (it is kind of used as a mark booster for your tests). Lessons are sometimes slow, however, it is made up for the humour added. This does yield to not getting through the entire curriculum, but you definitely get a strong foundation if you want to teach yourself the other components.