Hey man, welcome aboard
I gotta be honest, your title sounds like an invite for some innocent m2m action
lol
That being said, $15k should get you a pretty clean, mostly stock, FD. I paid $14k for mine back in 2006. As for learning, it sounds like you're in good hands, mechanically, for general car stuff. As I'm sure you know, rotaries are def unique and they go together a bit differently than their piston counterparts.
Check through the build section for some pics of how they go together (I've got pics of the internals in mine for sure).
Cheers,
Levi