Know your IFR stuff cold. After all, if a guy can't fly in the system that's he's already been deemed qualified to operate, he can't try to learn an airplane while trying to learn how to shoot an ILS.

The sim instructor knows you're green and have no clue. It's his job to teach you. It's your job to learn. You're not the first one that's going to get typed having zero jet time. You won't be the last.

After you're typed you'll go on the road and realize that the real world is far different from the simulator. You'll have EDCT times measured in dog years. You'll grease that landing with a smile only to be met with Mr. Moneybag's kid greasing the seats with puke. You'll hear "Westchester County" and twitch with a PTSD-like reaction. You'll also drink heavily (if not so already).

Be a sponge and soak up those "time tested captain tricks" to flying the rig. Every plane has them. When the old man in the left seat begins to teach, take mental notes. Soon, you'll be doing the same as you mentor the kid next to you when you upgrade. You're not going to configure the airplane in a static, empty environment like in the simulator many miles from the airport. You're going to fly fast and configure even faster to deal with the dynamic traffic around you. In live theater, there is no "position reset." You'll grow to survive on FBO popcorn.

In the end, you'll love the flying but hate the job.