Other than my own book (available where ever e-books are sold), here’s a list of recommended reading:

• Color Me Beautiful by Carole Jackson (note author – there are other versions, which should be ignored)
• Color Your Style by David Zyla
• Dressing Rich by Leah Feldon
• Quality, Taste and Style by Tim Gunn (anything by Tim Gunn is worth reading)
• Ready to Wear:  An Expert’s Guide to Choosing and Using Your Wardrobe by Mary Lou Andre
• Terms of Adornment:  The Ultimate Guide to Accessories by Deborah Chase