I don't agree that you can learn AWK in its entirety in two hours, but I do (strongly) agree that you can teach yourself the basics in two hours and those two hours are extremely well spent considering that AWK is useful for so many things.

Surely handling the intricacies of CSV can be a pain, but let's face it: Most tasks are simple and its results are easily verified for correctness. Obviously, I don't write my production webserver with AWK -- I write simple script to parse data (locally), find semantic issues in CSV files, analyze log data, etc..

AWK is great! If you want a slightly bigger cheatsheet, here's mine: https://github.com/rethab/awk-scripts/blob/master/talk.txt