You know, I hate to admit this, but most people are just making it up as they go. Each genie tends to take their own perspective on how to weave magic, grant wishes, and just generally get genie with it. I think a lot of that has to do with the fact that very few people actually sign up for such a role (most commonly, geniefication tends to be accidental. Or, uh... planned by another party, if you understand my meaning). Usually your bottle/lamp is going to impart essential knowledge unto you, but it's a real 'learn as you go' experience for most.
That being said, there are genies who will show folks the ropes. There are some who really want to preserve the classical (or classical pop-culture) aspects of the genie: Proper greetings, wish granting flourishes, when and how to twist wishes, etc. They tend to be hard to find. Not that it's easy to find any of us in the first place!


