The discussion on teaching oneself differential forms highlights various resources, including online courses, videos, and textbooks. Recommendations include F. W. Hehl's "Foundations of Classical Electrodynamics," Ted Shifrin's notes for a hands-on approach, and Tristan Needham's recent book for clarity. Participants emphasize the importance of understanding multivariate calculus as a prerequisite and suggest that topology knowledge is more critical than advanced analysis. Overall, the community shares valuable insights and resources for effectively learning differential forms, catering to different backgrounds and goals.