The jiujitsu university book mentioned earlier is great. It focuses on defense and position over techniques and submissions. For example the 1st chapter is white belt:survival which cover defensive postures to use to protect yourself when in a bad position, which as a white belt is often. Chapter 2 is blue belt:escapes, how to use those postures to set up high probability escapes and how to escape from the submissions you will see most. Good stuff, especially for the older grappler like me, not you kids in your 30s or 40s.
As for Bravo I love his half guard stuff. Again for the older inflexible grappler the half guard sweeps are easier to pull off and half guard is easier to recover.