I use screenshots all the time. For example, in nearly all my blog posts. I was using Alt-Print Screen to capture the screen and then modify the image in Paint. But I have found a new way to do this that is as simple as clicking the Print Screen button, highlighting the area and then copy-paste into programs like Word or Google Docs.
The program is called Lightshot and it works fantastically.
Here is a link to the demo video.
Try it and let me know what you think.