The discussion centers on the choice of string theory textbooks, with participants highlighting Zwiebach's "A First Course in String Theory" as a favored option due to its pedagogical approach. One participant mentions purchasing the book at a local store for a good price, while another notes that their initial recommendation of Zwiebach to their professor led to a broader discussion among colleagues about its effectiveness for teaching. Compared to "Superstring Theory" by Green, Schwarz, and Witten, Zwiebach is considered more accessible for undergraduates and beginning graduate students, assuming familiarity with relativity and quantum mechanics. However, it primarily covers bosonic strings in detail, with limited discussion on superstrings and brane theory. Overall, Zwiebach is regarded as an excellent resource for self-teaching in string theory.