Blogging Confusion!!

What is a "post feed redirect URL?"
What does "processing my feed" mean?
What is "my feed?"
What does it feed? Who to?
What is a "post feed footer?"
What is a "post feed?"
What kinds of feeds are there?

Blogging Help

How do I "configure settings" for this blog?
What is my "feed reader?"
How do I get "validated?"
What is "validated?"
What is "validation?"