I'll be starting graduate school in mathematics this fall. Obviously what worries me are the qualifying exams. What is the best way for me to prepare myself in these subjects from now on? I'm kind of undecided whether to do all the solutions of past qualifiers from my institution (and other institutions) so early on, or whether to save them for later and practice them as a mock. Do you think that rehearsing with past exams in mock form (i.e., as in exam conditions) is better than just going for a long time to solve all the problems from all the exams? I understand that this should be accompanied by solving other book exercises or understanding the important theorems well. I am mainly talking about algebra, topology, and real analysis.
So in my situation would you start doing those exams while starting classes or do something else?
I just want different perspectives.
Thanks in advance.