>>40712190 (OP)Depends on if you want theory or practice.
>>40712420Waite's book The Secret Tradition in Alchemy is a good theory book, but it's really expensive at $100+ and it can be hard to find online too.
If you want practice, I'd recommend getting your hands on a copy of an even more difficult book to find, that does actually exist in PDF form online if you dig.
Chinese Medical Qigong Therapy: A Comprehensive Clinical Guide by Jerry Alan Johnson.
>picrelIt's about 1100 pages of dense raw alchemical information.
You should be very careful with putting anything in the second book into practice if you don't have a qualified teacher.
You can cause Qi deviations and really fuck your life up if you do it wrong.
For a starting point I recommend the Ba Duan Jin.