Sometimes words are not enough to explain how to use a software.
Screenshots are helpful but certainly not as helpful as a tutorial video.
To create one, try Bandicam Screen Recorder.

It records your rig screen and sound, as well as your voice.
The mouse click effects, real-time drawing, and webcam overlay will help you produce high-quality tutorial videos.
Features and Highlights
Bandicam Screen Recorder has five capture modes.

The other two are Devide Recording and Game Recording.
If you better capture what you see on your webcam, choose the former mode.
At the leftmost of the control bar, there is a menu button.
press it and you will see more options.
Bandicam Screen Recorder can also record your screen automatically based on a schedule.
To capture a frame, Bandicam Screen Recorder uses F11 as the default hotkey.
If you choose JPG format, there are three saving options.
A watermark will be added into every video.
To remove these limitations, you have to upgrade it.