Ok, well I said screw it, I'm going for 560 with the GPEN exam. Going to take it via Simulcast. Now I know the books will be sufficient but i'm starting to read Penetration Testing: A Hands-on Introduction to Hacking by Georgina Weidman, going to try to burn through as much as I can in the next week in a half through prior to the course.
Hoping for some advice before I start, any tools I need to get some practice with before I start? Any videos that would be of use to view? Anything absent more books to buy

Preferably free stuff, paying out of pocket once again.
EDIT: I also have a 504 Practice exam I can give away, expires on January 15th.