Dear Physics Forum personnel, I will be taking my first graduate course (as an undergraduate) in mathematics starting on this Fall Semester. The course is about the algebraic topology (Hatcher, Spanier, Massey, etc.), which I am very excited to take as I love the topology. I am curious about the typical difficulty and pace of graduate courses. Could you give me some of your experience about them in mathematics? Do graduate level courses assume all undergraduate backgrounds (analysis, algebra, topology, combinatorics, set theory, logic, etc.) from the students? My learning style is to keep asking why and doubt everything in the book and try to reason and resolve them by myself. I also like to formulate my own problem sets and try to work on them, rather than the chapter problems I still solve them, but not everything). As such, I usually move very slow. Also, I am suffering from a severe case of OCD, which have been haunting me since my freshman year (resulted in a bad GPA)...I am receiving medical treatment, and I am curious if I need to talk to the instructor to accommodate my difficulty.