Photoshop Tips

Lots of Photoshop howtos / short tutorials.

Planet Photoshop

Photoshop tutorials with screenshots.

Adobe: Photoshop Forum

This is the Photoshop Forum at Tek-tips.

Photoshop Tutorials -- Absolute Cross

A number of short Photoshop tutorials on various topics.

Adobe Photoshop Basics

An extensive Photoshop tutorial with screenshots - sadly there are many annoying pop-ups on this site that is hosted at about.com

Al Mackey Photoshop Tutorial

Photoshop tutorial that can be downloaded for offline viewing.

Introduction to Web Design with Adobe Photoshop

3-day online course in using Adobe Photoshop at the web developer virtual library (wdvl)

Laurie McCanna list of Photoshop tutorials

39 Photoshop tips / short photoshop tutorials.

Introduction to Adobe Photoshop

A comprehensive Photoshop tutorial.

Adobe Photoshop Tutorials

Official site for Photoshop tutorials - requires free registration.

Pegaweb Web Design

Pegaweb Web Design & Photoshop Tutorials features web design, graphic design and Adobe Photoshop tutorials.

insidegraphics.com

Photoshop tutorials, tips and tricks.

TutorialMan.com

Free Photoshop Tutorials.

Good-Tutorials.com

Over 5668 Adobe Photoshop Tutorials can be found here

Photoshop Tutorials Blog

This is a tutorial site for Photoshop tutorials that is in blog format.

Photoshop Tutorials at Melissa Clifton

This site seems to have a bunch of photoshop tutorials.

Photoshop Star

This site has a lot of short photoshop tutorials on various effects.

ImageMagick

ImageMagickTM 6.1.7 is a robust collection of tools and libraries to read, write, and manipulate an image in many image formats (over 90 major formats) including popular formats like TIFF, JPEG, PNG, PDF, PhotoCD, and GIF. With ImageMagick you can create images dynamically, making it suitable for Web applications. You can also resize, rotate, sharpen, color reduce, or add special effects to an image or image sequence and save your completed work in the same or differing image format. Image processing operations are available from the command line, or from the C, C++, Perl, Java, PHP, Python, or Ruby programming languages. A high-quality 2D renderer is included, which provides a subset of SVG capabilities. ImageMagick's focus is on performance, minimizing bugs, and providing stable APIs and ABIs.