How to set manual exposure in M?
How to set shutter speed in Apperture priority?
How to set apperture in shuter speed priority?
Thanks
This post screams, "I should really read a book or take a course on the basics of photography!!" I do not mean that as a slam, dig or for it to carry any negativity. You've just got yourself a nice DSLR camera, likely after enjoying taking photos with a Point and Shoot, and now you have no idea how to use it, or at least some of the functions. There are many great tutorials on YouTube that you can watch to get yourself started, just search "DSLR Basics". Then look for a photography club in your area that welcomes beginners and don't be afraid to ask questions.
I know you've asked them here, but there is so much behind each and everyone that requires a fundamental understanding of things like, "What is ISO, how do I set it and what does it do?", that to answer questions without it would look like...
1. Use the meter and the front and back wheels
2. Camera does it
3. Camera does it
...and to answer it completely requires the writing of a book, or at least a chapter.
So, welcome to the wonderful world of photography, and Nikonites. We'll help you all we can, but you have a bit of self-studying to do before we can really help you.