Your library tells all ...
I've got some good ones there.
The hand-bound ones that don't have covers yet (yeah I do bookbinding - a ninja has many skills) are the Gingery books that tell how to build a smelting furnace, forge, and make machine tools from your own metal castings by hand. I have the Lathe, Milling Machine, and Metal Shaper books bound up and waiting for covers.
THere's a plethora of "fighting" books that I never actually read. The real combat books in my house are four volumes of what I call "the Big Black Book" which I compiled over the years as a rowdy militant, and it's all very good stuff, much of it hand-written notes from training classes and AARs.
Lots of programming books. Lots.
A book on ancient myths and cultures.
I'm diverse I suppose.
