Which book are you studying from? I'm sure the folks running the course will help in as much as they'll tell you what to connect to what, which button to press and which result to record, but they'll throw terminology around expecting you to know and understand what it means.
It's not difficult to know what's meant by the term "insulation resistance", for example, but to understand why it's a problem, what problems it could cause, how to remedy it, where to look for faults etc. etc. etc. requires experience beyond book-based knowledge. I'm not just trying to put you off, ultimately it's down to you to be honest with yourself about how competent and comfortable you feel carrying out the tests based on your level of knowledge, and the fact that you're concerned enough to put in the effort outside of the classroom is encouraging... but perhaps you could ask the college if they could arrange a session of basic testing so at least you'll be able to "feel" it happening as well as reading about it? Or why not sign up for a testing course to show your commitment and put your mind at rest (and help keep the public safe!)? Easier said than done, I know, money and time and all that...
I guess what I'm saying is they'll probably help you to some degree, and by the end of the course you'll be able to do the right things in the right order to achieve the right results. I just know if I was in your shoes I'd have a constant niggling worry that I didn't really know what I was doing. Electricity is serious stuff!
Good luck with it.
