i was trained in OETI as a armament turret mech when i was in
the army. Turret is the moving "thing" above the tank.
You will be trained in repairing during kinds of turrets, like SM1,
40/50 Cupola, boinix etc. Also, as a turret mech, you will also
have to learn small arms... got to learn all sorts of rifles, M16,
Saw, GPMG, Coax...
Think you will meet one of your instructor, 1SG or 2SG Martin, he
is my fren... help me send my regards to him.. 
We attended the course together, he is a regular, and he stayed on
as an instructor. Quite a nice guy... learn more from him.
OETI not bad.. at least it is a stay out unit. Furthermore, it;s at
ayer rajah... easy to go anywhere... Not like some camps... far
away from the towns
I think your course shld be abt 3-6 months..
enjoy yourself there..
and also, the chicken wings in the canteen is very famous..
u must go and try.. 