With all the external references you need to know where/what they are, which reference book (LASORS, AIP) to reference what info.
Knowing the overall chapters are useful, here in NZ we have Vol 1 -4 for the AIP each one deals with a seperate set of info. In the Air law exam we were allowed to take the AIP into the exam and reference them. i.e. it was testing you as to where to find the info rather than memorising the volumes.
You will need to know stuff by heart, VFR Minima's, airspace restrictions etc...
Also memorise the PART of the CAR you will operate under... this is in the exam, and i got asked it on my flight test,.. at 400 ft ...
You need to WEAR Life Jackets if you proceed beyond gliding range of land, if you operate 50NM from land, you need life jackets for each PAX AND a Life Raft capable of taking said PAX.
You will need to know fuel types and colours for the Air tech exam andwhat they taste like,.... i prefer my AVTUR with a splash of orange.