I only learned Divide and Conquer algorithm in class but I'm getting to use it in real life now by juggling between masters admission test, college stuff and debian work by dividing tasks into smaller sub problems and making problems look a lot easier than they are.
Third year of college is no joke honestly. It's just way too hectic.
I got rid of Windows (nuked it) in favour of debian as windows was slowing down my perfectly fine machine. You should too, if windows troubles your perfectly fine hardware.