Assessing textbook quality involves evaluating various resources, including expert reviews and personal preferences. The discussion emphasizes that there is no universally perfect textbook; rather, the best choice depends on individual learning styles and curriculum needs. Participants suggest methods for selecting textbooks, such as reading prefaces, reviews, and ensuring the availability of problem sets and solution manuals. The importance of a solid foundational understanding in physics is highlighted, particularly for those aiming for graduate studies. Overall, the conversation underscores the need for careful consideration in choosing educational materials to avoid pitfalls in self-directed learning.