Pixlr is a free browser-based image editor, where you upload an image, manipulate it online, and the download the result. Now Pixlr has three settings (shown above):
Pixlr editor (Advanced) is the most useful tool of the three, allowing you to resize images, combine images, add text, use filters, and many other commands. The look and feel is very similar to Photoshop, so if you want to get comfortable with using Photoshop, Pixlr is not a bad way to start. And, unlike Photoshop, it's free!
Pixlr express (Efficient) presents only a handful of the most useful tools: resizing, text, and basic effects. In my humble opinion, the least useful of the three settings.
Pixlr-o-matic (Playful) is, as the name implies the most fun of the three, allowing you to add many cool and interesting effects, quickly and easily. Three of them are shown below (the original photo is from 4-H).
