The foundation of any dance is important. It's easy to learn the moves, whether you go to a class or follow a video online, as long as you have a dance foundation, you can learn to dance well.
What I mean by dance fundamentals is the softness of the body and the sense of rhythm, the ability to control the body.
You can search for some basic video training, adhere to the daily stretching, training their own bodies, so that you can really dance well, do not be too superstitious what the crash course. Not that it's bad, but the key to good dancing is lots of long hours of training. I'm a teacher who teaches HipHop, LA, and Jazz, and this is my experience, I hope it helps you! The picture below is me with some of my students