What is army ROTC like...?

How many classes do you have a week? Do you do field exercises, and is there any type of tuition assistance? What is a normal class like, and is it very hard to do ROTC while pursuing your major? Also, I have heard about cadets in the program going to army schools over the summer like jump school, how do these cadets get to do this? Do classes stop over the summer like regular school, or do you go to a meet somewhere for a month or two to further your training over the summer? Sorry about all the questions thanks for the help~!