Books on college preparation and exams (SAT, ACT, TOEFL, etc) can be found in the Academic Library. Look in the Dewey Decimal call number range of 370-378.73 and 428.
For example, the book—
The Art of the College Essay, written by Gabrielle Glancy, has the call number:
378.1 <-- Activities in higher education
G545 <-- by Glancy, Gabrielle