Appendixes contain other information on blend modes: "Color Mode and Bit Depth" explains why and when some modes are not available in Photoshop; a "Blend Modes Reference Table" summarizes important information about blend modes; "Online Resources" provides other resources for more information about blend modes; while "Blend Mode Tools Matrix" lists the blend modes in Photoshop and the tools that can use them.
The Hidden Power of Blend Modes in Adobe Photoshop is one of those long overdue books. While I have been a Photoshop user since version six, I too am guilty of shying away from much exploration into the power of using blend mode just because of taking the time to understand their use.
The Hidden Power of Blend Modes in Adobe Photoshop is very well written, as well as very logically laid out, and–as long as you have a fundamental understanding of Photoshop--very easy to understand. Sprinkled throughout the book are tips and tricks from many industry experts about how they use blend modes in their everyday work and some of the thought that goes in to their use.
The Hidden Power of Blend Modes in Adobe Photoshop is well illustrated with images and screen shots show exactly how a technique was accomplished along with the resulting images. If you are wanting to really understand what all of those blend modes are and how you can use them to take you work to the next level, I very highly recommend The Hidden Power of Blend Modes in Adobe Photoshop.