Well regardless of the bitching in this post about training orgs. I have just finished at OATS and found that the standard of training was good and the people friendly and helpful. The best thing that you can do to perpare in my opinion is to brush up your Maths (Trig, Formulas, Mental Arith, etc), Physics basics and get prepared to work HARD the couse is fun if you love Aviation and can be very rewarding but you have to work for it. Ignore people that tell you that it isn't worth it cos it IS go for it and good luck hope to hear you up there someday soon
P.S. to The person that said the guy in charge sold newspapers from street corners well Einstein worked in a post office!!!! Go Figure!