I'm a college senior whose going to grad school for math this fall (thank zeus).
I don't mind admitting that I was blindsided by the subject test this fall. I took the practice exam, finished with an hour to spare and only two missed questions, and wrote off the exam as a trivial matter that required no preparation. Then, I was beat up and dragged around the parking lot by the actual test when I took it this fall. It seemed much harder than the practice exam; in particular, I thought it was way, way more computationally intensive.
I'm not sure whether my perception was skewed or, if not, whether the exam will revert to an earlier, more benign, incarnation next year. But anyway: Now that I'm essentially done with undergrad, I thought that I would make a website to help future students deal with the subject test. So far, I'm just planning to link to some things I wish I had made use of (this forum, the four practice tests available online, ...).
So I thought I would ask whether anyone here has any recommendations that they wouldn't mind sharing. Is there anything you wish that you could tell your past self before taking this exam? Are there any books you found particularly helpful? Any websites?