Each instructor is different. I haven't had all of them yet, but my advice is to pay close attention the first few days to the course outline and syllabus. Ask questions to find out what each instructor expects from you. They are all very willing to help you and want you to succeed, each just has their own unique way of expressing it. Don't be intimidated by what you may have heard. They are phenomenal teachers. I wouldn't back out of an opportunity for any one of them to teach or mentor me. In the end it makes you a better nurse and that is what we are there for, not just the piece of paper.
As far as the stress goes, I am sure you have started to figure out ways to cope. The first semester was the toughest for me. It was a culture shock and overwhelming with 3 classes. Things got better after midterm. I'm in my third semester now, and the best way I've found to fight the stress is to stay organized, go to bed early on the days you are able to. I like to get the "busy work" out of the way ahead of time, so that it keeps those days closer to test time open for studying more intensely. Find a study buddy or someone close to you to carpool with and vent to/with. Try to let the things like dusting, mopping, and washing your car go without letting it bother you. Those are some of the things I had to let go of having on my schedule, in order to have better time management. I wish you the best! You will do just fine!