Official Adobe Photoshop Tutorials Explore Adobe's official collection of Photoshop tutorials.
http://www.adobe.com/products/tips/photoshop.html
Adobe Photoshop Basics - the "Crop Tool" A lesson on using the "Crop Tool" from "Adobe Photoshop Basics" - a free online course.
http://http://graphicssoft.about.com/compute/graphicssoft/library/course/bllps502f.htm
Daily Photoshop Tutorials Sharpen your Photoshop skills with a new tutorial every day.
http://graphicssoft.about.com/compute/graphicssoft/library/daily/bltad_aps.htm
Individual Photoshop Tasks Various individual tasks that can be performed on Photoshop.
http://graphicssoft.about.com/compute/graphicssoft/library/tuts/bltut_apsidx.htm
Adobe Photoshop Tutorial Website Index An index of Photoshop web sites that supply tips, tricks and tutorials.
http://graphicdesign.about.com/arts/graphicdesign/msubps.htm
Photoshop Tips and Tricks Adobe Photoshop resources for graphics, design, publishing, and the web.
http://www.graphic-design.com/Photoshop/