When you recieve money back from a grant (College), at the end of the year, how do you claim taxes on it?

I got a certain amount of money for college tuition. I didn't end up spending all of it, so I got some back at the end of both semesters. Now I recieved a tax return statement in the mail from the college. How do I claim this on my taxes? Also I bought books from Amazon, but of course because it wasn't at the school, I could not spend my financial aid on it. How would I go about showing this information to the IRS so they know I spent more money on books and everything insted of just keeping the money to myself. Also, could I show them reciepts from Office Depot with school supplies? Thank you for your help!

I already recieved the t-(something), I just dont know what to do with it or if it's mandatory.

An eligible educational institution, such as a college or university, in which you enrolled and an insurer who makes reimbursements or refunds of qualified tuition and related expenses to you, must furnish the 1098-T statement to you. You, or the person who may claim you as a dependent, may be able to take either the tuition and fees deduction or claim an education credit on Form 1040 or 1040A for the qualified tuition and related expenses that were actually paid in 2007. Institutions may report either payments received in box 1 or amounts billed in box 2. (Your school can choose to use Box 1 or Box 2 for qualified tuition and related expenses.) The amount shown in box 1 or 2 may represent an amount other than the amount actually paid in 2007. (All boxes need not be populated.)
Box 1 shows the total payments received from any source for qualified tuition and related expenses less and related reimbursements or refunds.
Box 2 shows the total amounts billed for qualified tuition and related expenses less any related reductions in charges.
Box 5 shows the total of all scholarships or grants administered and processed by the eligible educational institution. The amount of scholarships or grants for the calendar year (including those not reported by the institution) may reduce the amount of any allowable tuition and fees deduction or the education credit you may claim for the year.

(For purposes of the Hope Credit, Lifetime Learning Credit, and Tuition and Fees Deduction, only "Qualified Education Expenses" and "related expenses" qualify. Qualified education and related expenses are defined as tuition and certain related expenses required for enrollment or attendance at an eligible educational institution. Student-activity fees and expenses for course-related books, supplies, and equipment are included in qualified related expenses only if the fees and expenses must be paid to the institution as a condition of enrollment or attendance.)

For more information about the deduction or credit, see IRS Publication 970, Tax Benefits for Education, IRS Form 8863, Education Credits, and the Form 1040 or 1040A instructions.

Did you receive something from the school showing you received money back from the grant? You cannot deduct money you spent on things that was not qualified expenses and all your qualified expenses would show on your 1098T