The legend in his own time, the photographer known simply as
Ctein, has released (for now, anyway) free, downloadable copies of his book,
"Post Exposure: Advanced techniques for the Photographic Printer." This book gives solid advice on theory and how the eye and photographic materials work. This blogger is working slowly through the book, but it already has introduced new facts and figures to what I already know. While novices can learn from this book, it is certainly for the intermediate photographer and up. It should prove to be educational and a solid start to better printing.
The book is over 170 pages long. Topics include basic visual theory, the enlarger, printing with papers in B&W and colour, tricks of the trade, photograph permanence and more.
Ctein himself has been a successful printer since learning dye transfer photographic printing back in 1975. The materials and processes may have changed over time, but the human eye has not. So the hard learned rules still hold and can be passed on to the next generation of printers. Recommended.