How do I become a teacher?

The knowledge that I have acquired about becoming at teacher has mainly been through the Joys of Teaching.  The information was mainly about how to become a better teacher, not necessarily of how to become one. In the first chapters, it covered over what I should do about religion family difficulties and how I should deal with these problems in my class.  In the actual EDU 101 class, I do not feel I have gained further knowledge of how to become a Teacher, while I already know I need to become certified.