I read all 3 volumes obsessively in high school. I don't claim to have understood much of them, but every page passed before my eyes, and I managed to make sen

I read all 3 volumes obsessively in high school. I don't claim to have understood much of them, but every page passed before my eyes, and I managed to make sense of the easier parts, I think. One thing that stuck with me forever was the exercises near the beginning of volume 3, where you are given various "data processing"-ish questions that you have to solve basically with sorting and merging operations on a computer without much memory. I used those methods over the years to do stuff with the GNU sort utility and simple shell scripts that would have taken much longer to do with e.g. SQL queries. Being fairly SQL-clueless finally caught up with me a few years ago, but it was a good run.