^^ You need a good foundation beforehand, most of the Q's are pretty complicated, the majority having about a 30% or less correct response rate out of other question users.
Basically, you gotta really know it, and then when you do, the questions will still make you think for a good while.
You should check out Kaplan Q book Physio test diagnostics. Those are pretty intense too, most being 2 step.
The easiest questions are the end chapter BRS questions, they test the minimal basics.
I enjoy typing long responses to random posts because it keeps me from the agonizing misery of studying.