Vishesh, your reflections on the library learning experience truly resonate with me! You've perfectly captured why physical books and the right environment make such a difference in understanding complex subjects like DSP. I especially connected with your point about how the tactile experience of underlining and making notes helps concepts 'stick' - I found the same when working through Oppenheim's explanations of frequency-domain representations. Your observation about collaborative learning in the quiet library space is so true - sometimes just explaining a concept to a peer or hearing their perspective can unlock new understanding. This post has inspired me to make more intentional use of our library's resources. Maybe we could organize a regular DSP study group there? Thanks for sharing such valuable insights about learning beyond digital screens!