Hercdriver;
Here is some info the rest is all described in the threads you find here;
a) you don't apply for cargo specific, you just put in your ten bits and wait what they call you for (if they call)
b) you must have the right to work in the area of your prefference. So you as a canadian must have EU rights. (which is not as hard to get by as vica versa i'm assuming) then even you are being offered a base and position and if it is your port of prefference ... then you are in luck.
All the other info is hidden in the forum, not to far away. good luck
Pointer