Do you have to take a standardized test sometime soon? Are you having trouble getting your hands on a study guide for the test? Never fear; Learning Express Library is here. Learning Express Library is a database available through the Harris County Public Library web site. It has practice tests for the GED, SAT, ASVAB, THEA, real estate licenses, and many, many other exams. Simply go to the Harris County Public Library databases page and click “Learning Express Library” in the “Education & Libraries” category. If you are outside the library, you will need to enter your library card number at this point.