By study I mean do research on the company - what it does, its locations, its business. These questions all get asked in the interview - if you have no answers it doesnt look good.
Ive said from the start you should do whatever makes YOU feel confident. But I have also been trying very hard to point out that 'coaching' yourself through the FEAST test is not a good idea in the long term.
SIMPLY the best thing to do is turn up and see if you can do it. If you somehow make it to the training or beyond and you dont really have the aptitude for the job (because you coached yourself through the test) it can very quickly become a bad situation; far from home, with people you dont really know, trying to learn a profession that ultimately you cannot do.
Why waste your time like that? Yet we still see it.