For math, I would say nothing. What made the difference for me there was the teacher I was working with. A good teacher could help inspire me to get an A+ in College Algebra through Calc III while a bad one could result in me to get a D- in anything from Calc I through Calc III. Yes, I took Calc I and Calc III twice, because I got a D- the first time through both of those classes, and it was the same guy who taught me Calc I and Calc III for my second time through, and in both of his classes I got an A+.
I barely scraped through with a C for Engineering Math (Differential Equations).
For me, the teacher made the difference in math.
For CS, the most influential books for me were Knuth, Sorting and Searching (although I actually bought all three books in the series, unlike most others I knew), as well as the original Kernighan & Ritchie book on the C programming language (before ANSI C was published).
I barely scraped through with a C for Engineering Math (Differential Equations).
For me, the teacher made the difference in math.
For CS, the most influential books for me were Knuth, Sorting and Searching (although I actually bought all three books in the series, unlike most others I knew), as well as the original Kernighan & Ritchie book on the C programming language (before ANSI C was published).