Jing can capture and share videos (up to five minutes long) from your computer screen. Narrating a quick video is a great way to show someone exactly what you mean. Once you select your entire desktop, window, or custom area, click the Capture Video button.

Here is a great video how to use Audacity. Audacity is an audio recording software.

In Canvas LMS, there is a course called "Using Social Media for Academic and Professional Development". It will help you how to use social media in your courses.