[remy_luisant]

Probably a much better question is "why", for which the answer is: "You probably don't want to".

If you care about the learning: You can learn all that stuff for yourself.

If you care about getting a credential: You are in a field which doesn't care as much about those as other fields do.

If you want to teach and need the credential for teaching: Get therapy, teaching is a great way to live and an awful way to earn money.