Hello, from my experience, taking notes while self-studying is the most frustrating thing I ever faced. I am one of those people who doesn't want to miss any small detail! I started this summer self-studying "mathematical methods in the physical sciences - By Mary Boas" because I found it covering most of what I need for the next semester "quantum/optics/thermal" since I didn't had the opportunity to take calculus 3 nor algebra, so I wanted to fill the gap of the semester. I read complex numbers, more than 2/3 of linear algebra, multiple integral, and I'm heading after a week for vector analysis. The thing is, since I started I took notes of too too many papers. I don't know! I feel sad that I may spent unnecessary time in it "I did a lot of problems too". Do you guys think it's unnecessary to take the notes and prefer writing with pencil on the book? or it's better to write your own notes? "Of course doing the problems is undoubtedly a vital thing" -------------- for the past two months I used the library book so I didn't had the opportunity to write on the book. Now after I had the book, I may not complete the notes, I'll just write with pencil on the book and solve the problems. What do you think?