Prepping for the GRE? Not sure where to start? In this article, we’ll go over the full spread of GRE sample questions. From official to unofficial, paid to free, and computer-based to paper-based GRE practice questions and tests, we’ll tell you which materials are the best to use, and which practice questions will hurt you more than they help. Plus, we offer tips on incorporating these practice GRE questions into your study plan.