Try not to worry too much about the endless menu on your camera. Did you use a tripod on this shot? If not you have a very steady hand! I mostly use Aperture mode and a lot of manual focus. You might want to get a telephoto zoom lens as your next purchase. It's a lot of fun and will expand the subjects and the "look"of your shots. I have a 70x300 that I use everyday.
I used a tripod for that shot, also I had my camera on aperture priority mode. I found that mode easier to understand. I will keep that in mind. Thanks