Maybe this isn't the case everywhere, but we had two decent par 3 courses near where I grew up, one in Arcadia, CA, and one in South Pasadena (which was a little nicer). I started playing at age 9 and I don't think I ever played a regulation length golf course until I was 13 or 14. They were great places to learn all aspects of the game, from the swing to golf etiquette. I don't know what position I'll be in when my kids are old enough to play, but if I'm not a member at a local club (or maybe even if I am), that's the route I would take to introduce them to the game.