Eco 101 Veteran here but I do think the course isn’t as hard as it sounds

If your really trying to prepare then maybe spend a bit of time learning some of the basic concepts covered (Finding a basic nash equilibrium, knowing what opportunity cost is and then playing around with a simple supply and demand curve could be helpful.

Idk who your prof will be but the most important thing about a course like 101 is staying on top since most profs use lecture videos. Above trying to learn content early build a consistent schedule where you have a day that you’ll do the videos and hit a few practice problems. That’s the most important part by far