初学者必备，PSD文件是最好的。我们可以分图层来观察设计师们的作品，以便于我们发掘自已的学习目的和技术探索。主要包括以下内容：G2手机、Chrome图标、帽子、IPAD、菜刀、餐具、收音机、相机、椅子、书、杯子、信封、吉它、小人、箱子、地球、扑克牌等若干内容。
原文：What’s great about .PSD files? For one, we can observe and learn how experts create awesome designs by exploring the different layers and techniques they use. Beginners can appreciate how different functions in Photoshop can affect their images, and hence gain an understanding of how to bring out their desired effects. What’s more, .PSD files allow us to experiment with several layers within the file itself, providing maximum customization for any curious user.
转载：http://www.hongkiat.com/blog/45-fresh-high-quality-photoshop-psd-files/