I have been using FAFSA for a number of years now. There is no difficulty in it's use. However, having just recently enrolled and now taking classes at UMD online, it's important to make sure your FAFSA information reaches the school you chose. Fortunately I had no "issues."
Also, as Patricio said keep up with the dates that these forms need to be filled out. This way your "ensured" to get aid in a timely manner.One of the beauties of filling out FAFSA for me is that they "store" information for later use, alleviating the pain of having to fill out a complete new form. Just remember your password!