It’s a natural progression. Learn how to do a strict pull-up ..get really good at those. Learn how to kip..get really good at that. Then learn how to do the smooth, rhythmic gravity defying butterfly pull-ups.
Crossfit gyms are readily available here in the US. So what sets one apart from the other when you’re a new comer looking for a gym? Read these 5 tips for finding a crossfit gym and trainer in your area.