Lot's of books to choose from! I've listed some I found from Amazon below. I want one that covers mixing finishes like wax topcoats on Danish oil, or shellac as a top coat, etc. I also want a chart (that I've seen somewhere but don't recall) that compares various finishes in terms of durability, repairability, water resistence, shine, etc. I don't care about spraying techniques, I'm only doing hand finishing....
BTW, I'd welcome a recommendation from Jeff Jewitt, a sometimes contributor to this group and the author of many of the books listed below. Jeff, are you out there reading this?
Here's the list I found: Tauton's Complete Illustrated Guide to Finishing by Jeff and Susan Jewitt
Great Wood Finishes: A Step-by-Step Guide to Consistent and Beautiful Results by Jeff Jewitt
Hand-Applied Finishes by Jeff Jewitt
Finishes and Finishing Techniques: Professional Secrets for Simple and Beautiful Finishes in Fine Woodworking by Tauton Press
Understanding Wood Finishing: How to Select and Apply the Right Finish by Bob Flexner
More Finishes and Finishing Techniques: The Best of Fine Woodworking by Fine Woodworking
The New Wood Finishing Book by Michael Dresdner