OSDev.org

I am starting a new os and and i have no idea of how a microkernel works and I am looking for a good tutorial to get me an idea of how a microkernel works.

Go check out:

http://osdev.neopages.net

specifically:
http://osdev.neopages.net/tutorials.php

Have a good luck around the whole site, its really good. It was a great help to me anyway