Jeez, people can be harsh. However, I agree that you shouldn't charge right now. Just tell them you'll do it for free since you are just starting. Also ask them not to tell their friends you did it for free. That way, if in the future you want to start charging, not everyone will expect free stuff. But right now, you need the practice. And that's fine. I'm still there.
I also agree that you probably don't need to be paying for school. That money could buy a nice lens. However, seems you are already enrolled and aren't backing out. So, do this: browse this and other forums as much as possible, and watch as many youtube videos as you can. Try to match the amount of time you spend at school (probably not possible, but you see where I'm going). Decide for yourself which is better. Once you have decided, come back here and write up a good article on why you think what you do. It will help others.