I'd say non-programming fundamentals took about two months at about 4-6 hours a day, with the majority of that dedicated to algorithms and data structures. I t

I'd say non-programming fundamentals took about two months at about 4-6 hours a day, with the majority of that dedicated to algorithms and data structures. I took these two OCW courses: https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-006-introduction-to-algorithms-fall-2011/lecture-videos/ https://ocw.mit.edu/courses/electrical-engineering-and-compu... https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-046j-design-and-analysis-of-algorithms-spring-2015/lecture-videos/ https://ocw.mit.edu/courses/electrical-engineering-and-compu... And worked my way through these two books: https://www.amazon.com/Algorithm-Design-Manual-Steven-Skiena/dp/1848000693 https://www.amazon.com/Algorithm-Design-Manual-Steven-Skiena... https://www.amazon.com/Algorithms-Robert-Sedgewick-ebook/dp/B004P8J1NA/ref=sr_1_1?s=books&ie=UTF8&qid=1477403357&sr=1-1&keywords=algorithms+princeton https://www.amazon.com/Algorithms-Robert-Sedgewick-ebook/dp/... I wrote out my solutions on a whiteboard or pen and paper before typing them into a computer. Outside of A & DS, I spent some time on operating systems and networking in general. A little bit of probability, but no hardcore discrete math. There are swaths of areas which I now cover at a slower pace as time allows; compilers, AI, etc.