To learn infant psychology, pedagogy, hygiene, teaching methods in various fields, and pragmatic kindergarten work, you can buy corresponding books and read them yourself. It is best to have a professional and systematic study. At present, the requirements for kindergarten teachers are strict, and there must be a kindergarten teacher qualification certificate. However, the salary of kindergarten teachers is particularly high now, so try it. There is a school that specializes in training kindergarten teachers. Please check it.