well as far as the mental ability tests were concerned, there was nothing to prepare about. but again if you would have followed the previous jet airways link, someone had posted a link on what types of test was expected. I happened to go through it and believe me, some 10 questions from the 2nd test were ditto same. anyway, it was simple anybody could have done it easily.
I did focus only on subject matter.. and did well on the domain tests. I think many would have done well on the mental ability test, the deciding factor would have been the domain tests I suppose.