How does some people do magic? Can any one do?

Whether or not that was real " Magic " or not is irrelevant. The answer is no, not everyone can do it. Only the Gifted can do magic, and to learn to channel it you must be trained. Only the extremely powerfully Gifted manifest to their full powers naturally. If you wish to learn, find someone to teach you. I advise against Paganism, and Witchcraft, there is nothing wrong with them I just find that their ways of teaching are tedious. If you happen to find someone willing to teach you, good luck, it opens many doors.