Technical books unless your are a beginner are really more for reference and don't get read completely.
The last book I went through completely was Hans Windisch's 1956 "The Manual of Modern Photography - Technique" the sequel (well really just an updated edition) of The New Photo School - I have a 1938 copy in English and a 1944 "DIE NEUE PHOTO SCHULE, Die Technik".
My most important technical books are ones I've made (written in) my self which go back to 1976, it has my working notes, films, dev times, zone tests, formulae I use. Most of the data though is now in a lab/timer program I use on my laptop, I don't think I've put it on this one yet my new darkroom is only just ready to use after about 16 months without one.
Ian