The discussion centers on whether the "Calculus with Analytic Geometry Seventh Edition" by Larson is sufficient for self-studying Calculus II and III after scoring a 3 on the AP BC exam. It is noted that the textbook likely covers the necessary topics, including advanced integration techniques and theorems relevant to Calculus III. However, participants emphasize the importance of mastering Calculus I concepts before advancing, especially given the low AP score. Recommendations for supplementary resources include "Elementary Calculus" by Keisler, which is available for free. The conversation concludes with the understanding that the participant's prior knowledge from AP BC may align with the content of Calculus II and III, particularly regarding series, sequences, and vector calculus.