Welcome! You're going to love your new KK.
You need to do the "burn-in". Heat up to 500°F and hold for an hour, increase temp to 550°F and hold for a couple of hours, increase to 600°F and hold till there's no chemical smell. Make sure you have something ready to cook so you don't waste all that heat. As far as cleaning, Zep 505 and a soft rag works good on the outside. Lots of info on this stuff in the forum.