Get yourself into an aviation environment for at least some of your time. Doing your PPL (a start to the commercial training anyway) is one way, perhaps do some work for a local flying school (one I work for has school-age lads working the reception at weekends and cleaning aircraft etc. in exchange for flying). From the people you meet you will learn a lot more about the flight training system. Will help a lot when you come to talk to a bank manager about the loan (some banks have specialists who will know more than you about flight training, so you need to know what you are talking about!)