First - I think it is important to learn your teacher. You will get a handle on how they emphasize and what they think is important after the first exam. I think re-copying notes is useful and going over lecture notes is as well. One of my favorite questions to ask the instructor during lecture is "What would be the nurses first priority in this situation?" or some derivation of that question. Finally - I think the thing that has helped me most has been studying NCLEX questions covering that specific topic. It helps me critically think through the situation. Good luck!
You can also look into grants. I know of a few hospitals that will pay for your schooling if you agree to work for them after you graduate for a set number of years. Are you by chance a military spouse? If so, I know of a few programs that are worth looking into.