The most popular bitmap image editing tool.

Created by Adobe.

Main website:

• http://www.adobe.com/products/photoshop/main.html

Tutorial sites:

• http://www.tiemdesign.com/howto/photoshop.htm
• http://www.grafx-design.com/phototut.html
• http://www.thewebmachine.com/
• http://user.fundy.net/morris/redirect.html
• http://www.phong.com/tutorials/
• http://www.spyroteknik.com/
• http://www.shadowness.com/tutorials.html
• http://home.zonnet.nl/epragt/tutorials/photoshop/index.jsp.htm
• http://www.pixel2life.com/tutorials/Adobe_Photoshop/All/
• http://www.hongkiat.com/blog/category/photoshop-tutorial/
• http://psdtuts.com/
• http://www.iyiz.com/60-advanced-photoshop-tutorials/
• http://designreviver.com/tutorials/50-excellent-body-enhancement-photoshop-tutorials/

(add your favourite)