The classic Clean Code by Robert C. Martin <- probably won't learn much new, but worth it, just to let the concepts reenter your consciousness.

The Secret War Against the Jews by John Loftus <- Changed the way I think about inner workings of the government. But at the same time, many claims are hard to verify.

The life changing magic of cleaning up by Marie Kondo <- not life changing but decent and a quick, 2-3 day read.

Nassim Taleb books, pretty sure everyone on here read it or plans to so, don't need my description.

Halfway through The Undoing Project by Michael Lewis at the moment, it's pretty good, a joint biography of Kahneman and Tversky (of the "Thinking, Fast and Slow", which I guess is another HN classic).