A comprehensive guide to windows, window treatments, and accessories and the effect these things have on the decor of a home comes complete with helpful hints and decorating advice, as well as 130 full-color photographs of various window styles.
This is one of my go-to books for decorating ideas. The focus is on window treatments, and they've got good examples of many styles, but it's also instructive to look at the rest of the photo for inspiration on colors, furniture, etc. This is primarily a picture book, with beautiful full-color photos. There's nothing in here that will help you make your own curtains if you don't already know how, but for most people who are just looking for ideas about what to buy, I recommend this book.