OLC uses Moodle 3.9 (updated fall 2020)
YouTube Tutorials for Moodle 3.9
The following page has links to several YouTube videos to help educators create and edit their Moodle courses. Even though they are for Moodle 3.8 features, most reflect Moodle 3.9.
Moodle 3.9 - Moodle Website - Help for all Moodle Topics
This is the official Moodle website where they have information on ALL of their Moodle topics. Please check out the area and bookmark it, you can find the answer to most of your questions. https://moodle.org/
Moodle User Guides - https://moodleuserguides.org/
Zoom - Official Zoom Website - Help Videos for all Zoom Topics
Backup & Restore Moodle Elements