Pixlr Editor is a free online image manipulation program.

Tutorials can be found here - http://www.youtube.com/view_play_list?p=931F7D402AF4DD10
and here - http://ictpublish.com/pixlr/
 

Want something simpler and less intimidating? Try Pixlr Express.

Want something more fun? Try Pixlr-o-matic.
Want something local instead of cloud? Try GIMP.
Don't see anything below? Click here.