I remember that I was preparing for the entrance examinations for graduate school using the following books: 1. Zasov, Postnov. General astrophysics, 2. Kononovich, Moroz. General course in astronomy, 3. Martynov Course in general astrophysics (already outdated in many respects, but a very good book), 4. Books of the series "Astronomy and Astrophysics".
Fabric of the Cosmos (Brian Greene), Elegant Universe (Brian Greene).
Books with reliable facts, confirmations. Don't be distracted by reading these wonderful books :) I advise!