The discussion centers on recommendations for books and resources on tensor analysis, particularly for understanding continuum mechanics. Key suggestions include a free online resource and notes, as well as several textbooks such as "Tensor Analysis and Continuum Mechanics" by Flugge, "Tensor Analysis" by Michael J. Cloud, and "Mathematics Applied to Continuum Mechanics" by Lee A. Segel, which is noted for its affordability. Participants also mention the importance of mastering index manipulation and suggest classical texts like Synge & Schild's "Tensor Calculus" and Schouten's works for deeper understanding. The conversation emphasizes hands-on practice with calculations and the value of abstract index notation for clarity in tensor analysis. Additionally, the Schaum's outlines for Continuum Mechanics and Tensor Calculus are highlighted as useful, cost-effective resources.