In answer to your questions, I have been spending on AVERAGE about 5 hours a night during the week studying and about 8 hours a day studying on the weekends. I have zero aviation experience so this is all new to me. The instructors are available after class, but it is up to you to seek them out for help. They will help you if asked. You might want to start studying for the ADX now before you get there, as you will need all the time possible to just concentrate on the class material instead of trying to study for both the adx and class stuff. Trust me, you will need all the time possible, and I am not joking! The school has been a mostly positive experience for me. As with any school, there are good and not so good things, but I will leave that up for you to decide on your own when you get here. In order to pass the course, you will need to keep at least a 70% average on all your tests. I am doing ok right now. I have done good on a few of the tests and not so good on a few, but I think I will make it through. The tests are HARD!!!!
Not sure where your staying when you get here, but I am staying in one of the school houses, and it has been a mostly good experience. The house is in a nice area, and it is quiet. Good luck !