LearningExpress Library Complete and PrepSTEP Academic This link opens in a new windowPractice tests, interactive tutorials, and eBooks. Includes practices tests such as GED, GRE, SAT, TEAS, Praxis, ASVAB, DNAB, and CDA. Supports those looking to improve core academic skills, pass a high school equivalency test, prepare for college, join the military, obtain occupational certification, find a job, change careers, become a U.S. citizen, and much more.