Congratulations on the purchase. Above all, remember that photography is supposed to be fun. Read the manual and maybe a couple of good books on photo basics. Then go out, take pictures, experiment and don't be afraid to make mistakes. Take pictures of everything. Annoy your family and friends. If you're paying attention, the more you shoot, the better you'll get.
If you have questions, ask. Don't be offended by critiques of your work from others on this site. Almost everyone is offering input in the spirit of helping you learn and solve problems. We're pretty much all friends here.
You've ordered an excellent camera and Pentax's kit lenses aren't bad at all. And while we're sure you'll want to upgrade and add lenses down the road, don't be in a rush. Work on your composition and technique. When you find your ability and creativity is beginning to push the limits of what you can do with the kit lenses, then it's time to upgrade and add. Did I mention photography is supposed to be fun?