In reply to Stone Muppet:
For the basics start with:
Basic foundation - How to big wall climb (supertopo) by Chris MacNamara. You'll likely find the big wall experience very frustrating if this is all you know for your first big wall.
Develop efficiency - Hooking-Up by Fabio Elli, Peter Zabrok (It's a tomb with tons of pictures!)
Develop efficiency and technique troubleshooting - Higher Education by Andy Kirkpatrick
Depending on your rope and visualisation skills, you could just get Higher Education. If budget allows then also get Hooking-Up (postage is eye-watering). Both books are da'bomb for big walling and developing very advanced skills. Nothing else comes close.