Suggestions for genealogy presentation for beginners

Hi! I have been invited to give an introduction to Jewish genealogy to a group of Polish Jews living in Sweden. I would be happy for any suggestions how to make a successful presentation, so that we can gain new active Geni members. What's the best incentive that makes people start doing genealogy?

Humans like puzzles, mysteries, treasure hunts and intellectual challenges of all types but mostly as an individual activity. Genealogy is one of the best paths to follow to enjoy these basic human interests. It's very welcome during Covid, during the long Swedish winter, and as a pastime that does not require travel or equipment. Have them start with a blank sheet of paper! Father, mother, etc. You know the sequence. And thanks for volunteering, and for helping me in my Geni pursuit.

@Dan Berwin Brockman
Thank you for valuable suggestions. Will try to use them.