Camtasia is a robust and easy to use screen recorder and video editor that make is easy to record your screen and create polished professional looking instructional videos.
The Camtasia website offers a series of tutorial videos to help new user successfully use this powerful tool:
https://www.techsmith.com/tutorial-camtasia.html (right click to open this content in a new tab)
Additional text help files can be found at:
https://support.techsmith.com/hc/en-us (right click to open this content in a new tab)