The discussion centers on recommendations for self-learning differential geometry with applications to quantum field theory (QFT) and general relativity (GR). Participants highlight the challenges of mastering the complex mathematics involved in these fields. Key texts suggested include "Elementary Differential Geometry" by Pressley as a primer, "Differential Geometry" by Kreyszig for supplementary material, and Mikio Nakahara's book for a comprehensive approach. John M. Lee's works, particularly "Introduction to Smooth Manifolds" and "Riemannian Manifolds: An Introduction to Curvature," are noted for their clarity and effectiveness in teaching the fundamentals. Isham's "Modern Differential Geometry for Physicists" is recommended for its introductory insights into gauge theories, while more advanced texts like Fecko's and Frankel's are mentioned for deeper exploration, with Frankel's book serving as a useful reference after foundational learning. Overall, the emphasis is on finding accessible texts that balance rigor with clarity for amateur learners.