This book is very good. I used to learn image processing by reading this book. It's from a friend. This is easy to learn. You can go to the bookstore or find it online.

Easy to learn: Photoshop digital photo processing

Easy to learn: Photoshop digital photo processing is one of the easy to learn series. This book comprehensively introduces the methods and skills of using Photoshop CS4 to process digital photos with easy-to-understand language and vivid examples. Easy to learn: Photoshop digital photo processing is divided into 9 chapters, covering the related knowledge of digital photo processing, basic photo processing methods, photo color adjustment and correction, problem photo processing methods, people photos and landscape photo processing skills.

"Easy to Learn: Photoshop Digital Photo Processing" adopts an illustrated way to make readers get started easily. This book adopts double-column arrangement, double-color printing, and well-made multimedia interactive teaching CD-ROM, so that readers can apply what they have learned and achieve the best learning effect. In addition, the supporting CD-ROM provides a massive learning resource library for free, including 3 ~ 4 sets of multimedia teaching demonstration videos related to Photoshop digital photo processing content.

Easy to learn: Photoshop digital photo processing is aimed at computer enthusiasts, and it is the first choice for primary, intermediate, home computer users and elderly computer enthusiasts.