What are the mode dial settings for Nikon D90?

So when I got my D90, i"ll admit I was stupid and changed all of the settings…
So, I need the ISO, shutter speed, aperture and all that for M, A, S, P. Please help me.please!

Added (1). Since it has no set settings, what do they stand for and do?
i'm still learning about that…

Added (2). I don't have my manual with me.

Here is the link for your user manual as pdf file:
http://www.nikonusa.com/...oprint.pdf

There are no fixed settings