i am going to be going to college full time i want to add another class but i was wondering if i add it would my bill go up or do the tuition stay the same price for full time? how does tuition work? also i got a pell grant and the ladie said i will have some money going to the book store how does that work ? is it in a cumputer or do i get a paper that i have to show the book store.

Tuition is usually charged per credit hour. When you reach a set number of credits, it is a flat fee (in most universities). You should go to the web-site of the college you are thinking of attending and check their tuition rates and policies.
The money going to the store will be on an account. You will probably use your student ID number or SS# when you are ready to check out, and they will access your account for the amount due.