I reject your challenge. I don't think anyone should sell you on enemas. I don't think it's a good idea.
Most people who are on here are sexualized towards anal play for starters. For people who do like to play back there, there are a lot of ways to play that do not involve water and mess.
Enemas are a bit ritualistic - lots of sex acts are much simpler and safer and cleaner. Just setting up the bag and whatnot can seem like foreplay. But for someone who does not want the enema the preparation ritual provokes anticipation of a humiliation.
Most people on here knew plenty about enemas and had experience before they got here. There are a lot of "mission reports" and "war stories." If you have read any of these and didn't wonder what it would be like to use that particular gizmo to insert x quantity of whatever sort of fluid, then you are probably not going to get into this scene.
Most people selling enemas as a service or equipment are selling health improvement. A lot of the claims are bogus. Sexual pleasure is not on offer. Even in sex shops you only really see shower-shot type deals on offer. These are marketed not as sex toys but as personal hygiene - to clean out your rectum before anal sex.
I think if you were interested in enemas you would have gone and gotten at least a couple of the little drugstore bottles or a drugstore combo kit and tried one already - to satisfy a natural curiosity. That's where a lot of people come in, saying basically "I've made this little start. What's a good way to get some decent equipment discreetly?"
If you really wanna know what it's all about why not make that little start and then come back for more if you want it.