Snagit is a screen capture program that records your computer screen. Very useful to make videos or take screenshots displayed in your computer and upload it to your blog.
After you learn Snagit I recommend you move forward in learning Camtasia, which is an advanced screen recording that has editing features to make your video more professional.
To download a free trial, go to the following link from the Techsmith website:
https://www.techsmith.com/snagit.html
BASICS OF SNAGIT
