flyhiigh
The reasoning test is the cubes and forms test. You're given 8 boxes with shapes or "whatever" inside them and you have to figure out from the patterns what will go into the 9th box. (There are 8 choices to pick from) The test starts out pretty easy and within a few minutes, your head will start to hurt LOL.
As far as the technical test, it is mostly info form the JKI and some about Cathay. As mentioned before though, only about 90% of the questions are from that. There are other questions that they just "hope you may know" so you want to study all you can about aviation. I got asked on my test what the longest passenger airline plane is. The choices were A340-300, A340-600, B747, or A320. The answer is A340-600 and I only knew that because I see the plane everyday at the airport. Best of luck to you.
-Cheers