Dont sweat the systems. I fly the J41 for Trans States Airlines and came from a similar background. The systems are hard only if you don't study. The 31/32 and 41 are similar from the systems standpoint and rather straight forward. The electrical system is different, but aren't they all. You will have no problem. They should give you a copy of the MOM's 1 and 4 at the beginning of systems. They are two huge manuals that have all of the systems in them and limitations.
Just remember, no one drinks all of the water that comes from the fire hose of knowledge that they will throw at you in 2 weeks or so. Good luck!
Just remember, no one drinks all of the water that comes from the fire hose of knowledge that they will throw at you in 2 weeks or so. Good luck!