SnagIt is a simple, powerful screen capture software that allows the user to capture and edit anything on your computer screen. It also records video of activity on your screen.
SnagIt basic tutorials videos to help you get started and advanced tutorials to sharpen your skills are available at:
https://www.techsmith.com/tutorial-snagit.html
Additional text-based support articles are available at:
https://support.techsmith.com/hc/en-us