welcome to the forum,and congrats on the bike
there are some grease fittings you need to hit,they are easier to get to by removing the wheel
pledge furniture polish works great for the plastic,but you must spray it on a soft rag,and then use the rag to wipe/shine the bike,dont spray it directly on the plastic,because it will not coat as even,and will look splotchy
i broke mine in like i was planning to ride it from the moment i got it home,,,,,i did change the fluid after my first hard day of riding,and more often than i needed to for a bit,until i figured it was time
i havnt had any problems that wernt caused by me(holds head low),but mine is a bit cold natured in the winter,and i see you are in some pretty cold country there in Minn,you might think about a block heater,and the "ice" anti freeze as well,i'm told grizz's are cold natured beasts(not just mine)
other than that just normal stuff like keep the air filter,and air box clean