The discussion centers on the availability of ETS's "Practicing to Take the GRE Physics Test," with participants expressing difficulty in finding a copy for sale. The REA book is criticized for being unhelpful. It is noted that the ETS book contains only the first three practice exams, while all four exams can be downloaded as PDFs for free. For physics reference material, users are advised to rely on undergraduate textbooks covering topics like electromagnetism, Lagrangian mechanics, special relativity, quantum mechanics, and thermodynamics. A strategy is suggested to use one practice test as a diagnostic tool to identify knowledge gaps, followed by focused study and timed practice to simulate actual testing conditions.
