hey, I think its not about knowing everything in open book, its about knowing where to look.
practice makes perfect, they say chapters 1-6 are vital for closed book, so maybe open book questions will come from the rest.... oh and poisons, vets and CDs in MEP
I agree with Bleepholder, it is tempting to try and look up every answer (as you have it in front of you somewhere), but the best approach (which I took in my exam) is to go through the paper and answer the questions you know, and then go back to look at the questions you have left out more thoroughly.
The most important thing to remember about the open book question is to complete the calculations section first, because of you run out of time on this section looking up all the answers earlier will all have been in vain (I remember one pharmacist who answered one question at a time and didn't move on to the next question until he had answered it - needless to say he failed the first attempt at his exam).
Otherwise, good luck with it all, it's worth it all in the end!
Hey, I would say know your BNF+MEP inside out, then practice loads of questions... RPSGB have samples... Read current articles in the PJ and changes to regulations... Try and practice questions without looking at the answer... You will remeber things better.. I practice 30 cal questions a day on pharmacycpa.com just to reinforce my learning + gain confidence.
Hope that helps!