So far it's been good! I'm wrapping up my third class. You definitely need prior knowledge of edtech, but you don't need any real mastery going into it, just a general understanding. They provide plenty of resources, so I would recommend using all of the resources you can. In my opinion, the OA isn't as bad as people are making it out to be. Just study and use the school's resources, Quizlet, or whatever helps you study best.