I got my son a mini pool table and a short cue at age 4. I just let him play with it like any other toy, never wanting to force him to play due to the risk of turning it into a chore. Now he now likes to come to the pool room with me on occasion and likes to have his own table to hit balls on, but dislikes if I try in any way to give him tips or instruction. He is now 9 and can shoot a little and make balls on a 9 footer, however I limit his time there for now because his stroke arm does start to "chicken wing" out to the side due to the height of the table. In a year or two his height will catch up and a pendulum stroke should be much easier. I hope to have a home table by that time. I know some pros like Keith MccCready learned to do very well with the elbow out to the side but I dont want that to be an obstacle he has to learn to overcome. So for now I just take him here and there and let him plays as long as he wants for fun. It helps that my fiance's grandparents own the non smoking pool room and treat him like a king when he's there (free mini pizzas, hot dogs, drinks, etc) lol.