Forget about trying to learn systems before ground school....it just won't make sense when you don't have an airplane to actually look at. I tried to and learned nothing. EP's are a different story.....in my opinion the earlier the better. Boldface memorization would give you a good head start on the stuff you need to know. There is a lot of other info too, but you won't have it until you check into the wing and get your pubs. You can learn EP's in a week for the T-34, but I think you will have a better understanding all around if you allow yourself a few weeks to slowly go through everything. Hope that helps!