This may be a silly question,but does anyone know the specific books I need to have for using Preparing? Not the LA,Math ect.The science and history ect.I have looked in the book shop but am getting confused on which ones are needed for which manual??

I plan to buy the manual this friday when I get paid and also the books I need.I wanted to check first to see if the needed books- we already have or the library has and the ones we dont order with the manual to save on shipping.Can anyone help??
Blessings
Elizabeth <><
Mom to a horse lover,2 cuddly cats,and 1 huggable minpin!