If the books were paid for through the school, it could be on the 1098-T.
If you purchased books outside of the school, you would need to enter those expenses on the additional screens for book and supply expenses.
Under Federal Taxes
Deductions & Credits
Education
Other Education Expenses (for all schools)
Report the 1098-T but be sure to look at your student school account statement and receipts for books and supplies you purchased.