First of all, it is important to know that dancing Latin is definitely a very difficult thing, even for the most talented people. Latin is a sports dance, not only for the understanding of the dance, for your physical fitness is also a test. The same running for thirty minutes and dancing Latin for thirty minutes, Latin's exercise is definitely bigger than running. In addition, Latin requires that all parts of the body can be separated to move, especially for the crotch, leg requirements. Legs must be strong, so after dancing for a period of time, there will be calluses on the feet. About two years, you will have more muscles on your body. Therefore, you must be prepared to suffer, if you feel comfortable doing a movement, it can be said that the movement is not in place or wrong. Latin moves require a confrontation.
In response to your question about how to drive the legs, we say that the crotch and the legs interact with each other, depending on what movement is being performed. Most of the legs and then crotch, such as rumba forward walk, after the foot, the back of the foot heel slowly turned in, then your crotch will open, the more the heel in, the crotch hit the more open. The key to dance is to observe how the teacher dances, don't be in a hurry to dance with the teacher, see clearly first. Then dance on your own, practice more, not necessarily that period of time to always practice a step, every once in a while to practice that step, you will have a new experience.