1. What is the order of the Redwall Books?
You can read them in two different ways. One is the order Brian Jacques wrote the books-
Redwall, Mossflower, Mattimeo, Mariel of Redwall, Salamandastron, Martin the Warrior,
The Bellmaker, Outcast of Redwall, Pearls of Lutra, The Long Patrol, Marlfox, The Legend of Luke, Lord Brocktree.
The other is the way they are chronologically- Lord Brocktree, Martin the Warrior, Mossflower, The Legend of Luke, Outcast of Redwall, Mariel of Redwall, The Bellmaker, Salmandastron, Redwall, Mattimeo, The Pearls of Lutra, The Long Patrol, Marlfox.
I suggest reading them in the order they were written.