There are many great and sick minds here so and we're all here to help as we can. Don't hesitate asking anything, we've heard it all over the years so ask away. Right off the bat here are a few items.
YES, the bike sounds like a bucket of rocks when it is idling in neutral, it's normal. Pull in the clutch lever and it goes away.
YES- The bike handles like crap at low speeds when there is a flat spot on the center of the tires from straight line highway riding. Don't follow BMW's air pressure recommendation, it's too low. Put some air in the tires to make them last.
YES- The stock windscreen sucks, unless you like the wind in your face or your chin on the tank. Go with a BMW Comfort screen w/Laminar Lip, or another screen if you can find them now, they are slim pic-kins as of late.
CHECK your brake pads for wear when you get home, especially the rears.
CHECK your battery preferably by a dealer for battery condition UNDER LOAD. Batteries are very important for the function of many things important........like starting and brakes.
That's it for now, I'll let someone else step in. Enjoy your new scoot, had mine for 7 years this month.
Yeah they need to be worked on from time to time but that's part of motorcycling. Again, don't ever hesitate asking us for anything here, we're Family