Photoshop is more important and dynamic software program developed by Adobe. For being versatile and easy to understand photoshop is used frequently to Photographers, Graphic designers, Animators,Astronomers and Architects. I have been using Photoshop almost ten years, as web-designer I use to make labels ,improve quality of images and create the backgrounds images.
Photoshop plays a prominent role in web design industry,it helps web designers to create the backgrounds,wireframes and create new images. Each tool of Photoshop has different feature which make exciting and enjoyable working with it. There are hundreds books in market teach how to use Photoshop but the best learning is practice constantly.