The motivation paper
as i remember it, is just a multiple choice question paper on material they send out with your stage one invite. While it *might not* be up to date, learn it because thats what the questions are taken from. I remember my paper a year ago being dated 2002 or somesuch - about 5 years old.
The questions are not too difficult, but you will need to read the material you are sent at least a couple of times!