You've picked a wonderful hobby.
There are so many resources for someone that is new. If you want to learn about your camera there are books written that are easier to follow than the one Nikon included. Magic Lantern has a series; Henry's often has them for sale.
Thom Hogan produces e-books for Nikon cameras. I"ve bought these for each of the Nikon dslr's I have. They're helpful. But I'm old enough I like a printed copy, and he has now seen to include an introduction in print. I like that.
Ken Rockwell has many opinions and loves to share them on his site. Some love him; some don't.
One of my earliest memories was the Nikon School. It was incredible seeing a pro's work so intensively.
Finally consider checking out galleries of photographers: photo-net, flickr, dpreview.
Hope this helps,