Welcome to beginner mode, the only place you can get congratulated for a right answer, whether you actually give it or not.  Yup, I’m going to be nice and just assume you get them right and tell you the answer in case you actually do miss some.  That said, for the first question, this might be the beginner’s course, but I bet you still know who the human author of the book is.  We know the actual author is God, of course.

-Moses wrote it-

-Joshua wrote it-

-Aaron wrote it-

-We don’t know who wrote it-