The application process changed middle of last year, and as far as I'm aware very few people have been all the way through the new process. Thus, there is very little information for others to pass on to you.
My advice? Read the stuff they send you (the paper WILL be based on that) and try and remember as much as you can. Nobody's going to tell you what kind of questions are in it, that's giving you an unfair advantage. Read about what used to be in Stage 1, from what I gather that's now in Stage 2....
....which is pretty much what's been said in the main thread!