There are several study guides out there written by pilots in the 737 that will assist you in the type ride oral exam and ground school. Look for a "NG" book that is different from the "Classic" EFIS package or the steam gauge aircraft. The "737 Cockpit Companion" by Bill Bulfer is one with NG info. But the type ride is much more than just system knowledge.
You will be driving a truck compared to the light twin. Everything will happen 4 times faster than you are use to. Plan on single engine to be slower to accelerate and quicker to slow. ALWAYS ALWAYS ALWAYS Watch your speed for gear/flaps/profile/10,000 feet/etc. Never never never get slow ESPECALLY single engine. DO NOT USE the ailerons during single engine - low and slow - climb (use the rudder). The ailerons will deploy wing speed brakes to assist the turn. You don't need speed brakes when attempting to accelerate to climb. You will do this once and crash.
Know your profiles before going in the sim. Plan ahead, plan ahead, plan ahead...... and plan ahead. Chair fly your profiles until you know them in your sleep. If your right seater is not exhausted - you are not using him enough. Direct the cockpit, ATC, the crew, and all others to ensure the successful completion of each maneuver. AS PIC you are in command - act like it (but don't be an ass). Manage the event - not the event managening you.
And have a good time. The simulator is a 15 million dollar video game.
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QP, I have trained cadets also. Those poor captains have their hands full.......