They know the song, and they know what the guitar needs to sound like to go with that, even if they don't know the guitar itself well enough to pull it off very well. All I can say is get yourself into a group of flamencos and check it out. I wish the news were better. You've got to go find some flamencos. If you're just starting, the older anthologies are usually better for picking out basic ideas.
Contemporary flamenco is pretty jazzy, and while the bones are there, they can be pretty obscure.
Obviously solo guitar recordings aren't going to be too helpful. Neither are the Gypsy Kings for anything but rumbas. Therein is a dilemma. But of course it's the beginning singers and dancers who are willing to spend time with you. If you can't afford the maestro, it may be that one of their better students teaches too.