For first-year undergraduates studying quantum mechanics, several key textbooks are recommended. Shankar's "Principles of Quantum Mechanics" is praised for its clear introductory chapter on necessary mathematics. Griffiths' book is highlighted as a solid investment for foundational learning. Other notable mentions include Liboff, Zettili, and Isham, with Isham being recommended for its focus on theoretical understanding. Advanced texts like Ballentine are acknowledged but not advised as initial reads. Older works by Kramers and Landau are valued for their insights into the foundational aspects of quantum mechanics. A.C. Phillips' book is suitable for early studies but limited in scope beyond the second year, while Auletta is more beneficial for advanced students. Cohen-Tannoudji's two-volume set and David Miller's "Quantum Mechanics for Scientists and Engineers" are also suggested for their clarity and self-study suitability. The consensus emphasizes the importance of consulting multiple sources to fully grasp complex topics in quantum mechanics.