One of my activities in blogging is capturing screen and make a screenshot of the screen. This is useful when you want to describe your text blogging clearer with pictures. There are many screen capture software, from paid ones till free ones.
One of my favorites is "Screen Hunter". To use it, just download the software and install it. After installing it, set it to run automatically on Windows startup. Then you'll be able to use it by just pressing F6 to capture anything on the screen. Actually there are more options to set on the program.
Here's a video showing how to use Screen Hunter to capture screen.