This is a wonderful video on the basic techniques and usages of the tools found on Pixlr's fantastic photo and image editor program that can be used directly online at:
http://pixlr.com/editor/
I am not the creator of this wonderful video. It's done by Haldor Lønningdal. You can visit his website at:
http://www.ictpublish.com/
or his YouTube page at:
http://www.youtube.com/1haldor
Many thanks go out to him for taking the time to make this wonderful 1 hour 21 minutes training video that is set up into 32 chapters.