Seriously check out your options. If you decide it isnt something you have interest in so what. That is the best part of having freedom from age... you can still always change what your life interests are. I still highly recom. the pilot thing tho even if it is for your own personal travel...to heck with airport security when you can save at least an hour jumping in your own aircraft
(well...i guess once you get something fast enough and the ratings). Like the last post tho...the pilot isnt the only job. Honestly tho...i will still try the gleim stuff for study and pass the PPL test. Once again...if you can get through that then motivation is on your side for the PPL and maybe more!
Your schools 300$ stuff may not be all that bad...however every person I have talked to says that flight knowledge isnt from a book...its from personal experience or others. So the cram and jam from any books isnt a real help in the long run (or at least I think so). I remember when I passed my PPL and the examiner shook my hand and said "congrats...you have your license to learn". Anyone else agree?
Edit: If your flight school requires the 300$ of stuff...of course get it if your going to go that school. Just my 2 cents after deprec.....so 1/4 cent.