DeVor rarely throughly goes through material, when I had his class he would just post short videos with example problems on google classroom and let us do it ourselves. I would recommend reviewing the material yourself using things such as khan academy, also be sure to memorize formulas since he will often not let you use calculators for his tests.

DeVor doesn't teach so make sure that you pay attention to CPM's math notes as those are very helpful.

Don't rely on the final to raise your grade, because it's barely worth anything. (10%, the same amount that homework is worth)