You can see the tutorials for the newest version for general features, here in english, and here in spanish; for repetions, here in english, and here in spanish; and for key remappings, here in english, and here in spanish.
Now available for free for everyone, try the new tool I created. With a minimal interface, you will be able to, have several screenshots available at the same time, copy, save, hide/show, and make quick editions of any of those. Taking screenshots and moving them around as needed, you may end up feeling that you have an extra screen!
To start using StickyShot just click here (only in english so far), and run the compressed installer. Then you can take a screenshot by pressing the PrintScreen key, and selecting the area that you want. Also, you will see all the options you have, right clicking the screenshot, or right clicking the tray system icon for more general options.
If you like this tool, you can get the Full version (with many more options and even more to come), just following this link to make the purchase.
(screenshot of a screenshot of StickyShot about info)