I have a Nikon D90 with a 18-55mm lens and a 55-200mm f/4-5.6G lens.
What I am looking for is a website that can help me learn about how to best use my camera, something like "Hello, I see you are trying to take a portrait of someone with Mountains in the background. You should use this lens, an f-stop around this number, a fast/slow shutter speed, a low/high iso"
It would also be helpful to see pictures with one setting changed, like here is the same picture with a different f-stop, here is the best f-stop, here is the best f-stop with a different iso.