In a discussion about studying cosmology, participants emphasize the importance of using up-to-date resources. Scott Dodelson's new book on cosmology is highlighted as a recommended choice, alongside Daniel Baumann's recently published "Cosmology," which is said to be on par with Carroll's General Relativity book. Previous exposure to quantum theory and thermal physics is suggested as beneficial for understanding Baumann's work. Other notable mentions include Padmanabhan's "Theoretical Astrophysics" and Maggiore's two-volume book on gravitational waves, although financial constraints are acknowledged. Barbara Ryden's "Introduction to Cosmology" is also recommended as a good intermediate resource. The availability of these books varies by region, with some participants experiencing shipping delays.