Hi. I wouldn't buy any books yet. When you go to school they will give you a list to go shopping for books and tools, and some might have it as part of the program. If you buy the books, and wait a little, the books could get updated and waste some money. Not sure what AIM school you are close to, but look around there are some really good A&P programs out there.
If you are working at a Airline, see if they have a Mechanic Helper program. That way you can build seniority while you go to school, and get to work around Aircraft and get a feel of the MTC
side. Sounds like you work at a Airline, If you can, go talk to the Mechanics and get a feel of what they are doing, and maybe they will show you around.
Just a Heads up, but there are a lot of depts in MTC
. There is Hangar work where you work on big projects. Shop Work, like Eng Shops, landing gear shop etc.. Then there is Line MTC
, and that's where you get to work live flights. I liked the Line work myself, following in my Fathers footsteps.
I started on the ramp while I went to A&P school, and moved to Line MTC
, and then Inspection. Over the last 26 years I enjoyed going to work and it seems to getting better every year
Good luck, and I hope they info can help you some.