Lots of gotcha's-don't worry about them..experience them like the rest of us(was on the 320 ten years)...
Initial course a hosepipe of information,will relax about six months on the line...
Side stick comes easily(you only use one side of the wheel now)..
Learn the magic(what does what),the airplane handles very well with no magic applied(auto thrust included)..
Have fun..
Cheers