Here is a great summary of the appeal and the basics of playing Pickleball. If you don’t already play, it might help you understand the new sport, or for avid players, it’s a nice, concise explanation for your friends.
https://extramile.thehartford.com/wellness/sports/pickleball/?ua1=Y&ua2=P&ua4=Y&cmp=EMC-PL-ExtraMile19-63959099&eml=1