You may be using the word differently here? To me owning means you own the land and building. Your expenses would include things like utilities and property tax. Your income would be club dues I guess. And that probably isn't possible at 15.
By owning a club for youngsters maybe you mean you'd give lectures or organize activities? And he'd pay you for your work.
So, I'm 15 and my current chess club owner offered me a job opening at owning, myself, a club for youngsters.
Everything is fournished, so I don't have to worry about buying anything, but he says there's gonna be money coming in my pocket.
I'm just wondering, how much :P