"All the mathematics you missed but need to know for graduate school"[1] helped me a lot (and, in fact, I had and did). Once I had finished that, Cullen's "Mat

"All the mathematics you missed but need to know for graduate school"[1] helped me a lot (and, in fact, I had and did). Once I had finished that, Cullen's "Matrices and linear transformations"[2] was really helpful too. But I wouldn't do Cullen if you're still, as I was, floundering with the concepts of why you're doing this in the first place. It's great once you have those concepts down. [1]: https://www.amazon.com/All-Mathematics-You-Missed-Graduate/dp/0521797071 https://www.amazon.com/All-Mathematics-You-Missed-Graduate/d... [2]: http://store.doverpublications.com/0486663280.html http://store.doverpublications.com/0486663280.html