text: Tennis is played the least among teenage girls. Why? Because they can't talk to their friends during play, like they can during basketball and soccer. Anyway, if you can get a group of non-players to start together and then get them to commit to the same time  every few days, that is a start. Have some music for them ( but not too close to the serious or seasoned players ). They can wear cool clothes, stay  or get thinner/stronger/muscle toned, and have posters of Federer, Nadal, Sharapova and Kournikova around.  You will need to give them racquets.  As for adults, again a group of beginners  ( so they aren't intimidated by better players ), maybe some hors d'oerves and wine once a week, clinics just for them. Stress the inexpensive aspects of tennis compared to other sports. Adults can start to play ANYTIME in their lives, as opposed to other sports that require a starting age during childhood.  MAKE THEM FEEL IMPORTANT. The pro as my club is so laid back that no one thinks he is serious about tennis at any level. He moves the court around from one clinic to the next confusing the newbies, arrives late, is unorganized, and does not seem grateful to these people for investing their time and money into a sport HE is supposed to making a living at and serving as an ambassador for, at the same time.  You can also try and get newbies to pro or college tennis so they can see how much fun it is and how the game is supposed to be played.