Starting to study alchemy

I would be grateful if you could share some books which are good to start studying alchemy with. Though I’m only limited to books available online freely. I tried reading a work by Claude D’Yge, but it seems to be too difficult to start with, I don’t understand much, despite my rather rich occult experience.
Also, I’m more interested in spiritual aspects of alchemy, not the physical chemistry.
And I know russian language too.

Welcome @JizzusChroist, please make an introduction at the thread linked in the image below and tell us about yourself, your magickal practice, how long you’ve practiced, location, etc.