It's almost mandatory to have the manual IMO.
Best reference for structural steel design under lateral loads. I used it A LOT studying and just as much on the exam. The tables will help speed up your problems if you know how to use them (the examples will show you went they apply). The spec is after the manual, similar to AISC 360 and the steel building manual.
As KootK said, the examples are more in depth than the actual exam. That said, reading through them to get familiar with each system is quite useful. In addition, the examples are a good example of taking loads, combining them, when to apply overstrength factors, and some other general ASCE 7 seismic load calculations that you will likely see on the exam.
Maine EIT, Civil/Structural.