This is a very soft question --- I have an upcoming open book exam on Algebraic Topology (includes Fundamental Groups/Homology/ Covering Spaces).
Any recommendations on what books/notes are suitable to bring in? Ideally, some books with examples/worked solutions would be great. What I can do is to go to the library and borrow those books.
I am sure some of the experts here can just go in "empty-handed" and take the exams, however I would like to take advantage of the fact that it is a legally open book exam.
Hope this question is not too out-of-topic! Thanks!