What should I review or study up on prior to Battle Staff school?

You don't need to study anything because so much is covered in the class. But if you want to be familiar with the material read the ADPs and ADRPs concerning Army Doctrine and Operations Orders, operational planning and MDMP, including map overlays of unit symbols, unit makeup, and the Intel assessment (can't remember the acronym right now) and COAs.

Not really, you will train as every section- S1-S5. What you need to do is study the assignments they give you and ask questions of either the Instructors or and especially your peers who work inthe section.

Senior Military instruction courses are designed to pass that information on to You and they do. Give the course Your full effort, study all the materials and text You are given and it will pay off ! I've always found that 100% effort on the course got the desired result. I do remember though after one course I was so anxious to read something that wasn't a textbook for the course I read three regular books for pleasure within the course of a single week after completing the course. I got plenty out of the course but reading six volumes of text was plenty of good information but sure not entertainment. I'd still do the same thing again and concentrate mainly on the course while I was taking it.