Adobe Photoshop CS is the industry standard application for editing images for web, print, and screen presentation.
Photoshop provides a vast array of tools and filters for manipulating digital graphics. Layers and channels provide endless possibilities for blending and compositing images. Adobe Image Ready manages slicing, color palettes, transparency and compression effortlessly for web graphics.
Safari Tech Books online ex. Photoshop CS4 Layers Book Harnessing Photoshop’s Most Powerful Tool [browse titles for additional Photoshop resources]
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WORKSHOP TUTORIALS:(that were prepared for Photoshop v.7)