There are many things about a podcast that a podcaster needs to know even if you don't do everything for your show.  A lot of indie podcasters do everything.  Prep, Talent, Recording, Editing, Producing, Publishing, Booking guests and ALL of it.  Some only do the parts of it.  Sometimes it's a whole team.  BUT, YOU as the owner of your show, need to know some things no matter if you do them or not.