I took it yesterday,1.5 times.
Got halfway through and all the computers packed in
Somehow the questions on the second go seemed a lot harder.
Revise the sections of the BRB, you don't need to know details, just what it covers (eg section 7 is special locations).
Make sure you know what fittings (saddles, cleats etc) are used on various cable types and surfaces.
It's hard to give good advice, it was a very mixed bag of questions.
Probably worth a quick read of the OSG the night before, I got questions on locations in a bathroom, heights and lengths of suspended outdoor cables, and even one on the components of a lightning conductor.
Most of it is what you already did in the other exams, H&S, types of Information etc.
Dont worry about it to much, everyone in my group that took it passed, most with distictions.
Hope that helps