Just a little advise, I wouldn't study ANYTHING about your new aircraft before you arrive to class and get the official manuals. I have survived three intitial 121 training classes, and I have found that gouge and non-company information can actually make it more difficult for you. If you could possibly get the actual up to date memory items from someone you trust who works at the same airline, then I might look at them. Otherwise, you might be studying the wrong airline's info, or even out of date information. The memory items from one of my classes even changed twice during the class period.
Trust me on this, you are far better off just concentrating on getting your life in order so that you can study uninterrupted during your class. Trying to get a leg up may sound like a good idea, but after you get through it you will understand what I mean. Don't worry, you will have plenty of time to study when class starts. Now if you want to read a book on memory tricks and how to study, that would not be a waste of your time. Good luck to you.