The discussion centers on recommendations for learning Multivariable Calculus, particularly for someone who struggled with Advanced Calculus using Adams' "Calculus, a Complete Course." Participants suggest various resources, emphasizing the value of Schaum's outlines for concise explanations and numerous practice problems. Several textbooks are recommended, including "Vector Calculus" by Matthews, "Advanced Calculus: A Geometric View" by Callahan, and "Advanced Calculus: A Differential Forms Approach" by Edwards. There is a notable critique of modern textbooks for lacking depth in proofs and intuition, with suggestions to consider older editions for a more rigorous understanding. The conversation also touches on the importance of self-study, the use of graphing calculators, and the necessity of foundational knowledge in secondary school mathematics. Overall, the consensus is to seek comprehensive manuals and older textbooks that provide a solid foundation for advanced topics in calculus.