Learning about kernels

Hey /prog/ thought this would be the place to ask. I want to learn from the ground up, low level programming. I thought the first to thing to know would be kernels, then assembly, thenC/C++/java/perl, and lastly scripting. Would I just need to wiki kernels to learn about them, or a book, some source on the web? Help!

id say learn assembly first, or at least familiarise yourself with the instruction set of your architecture. I havent actually viewed any kernels (id say linux is the only one easily obtained) but i hear they are mostly written in C and inline asm.

Is this for any particular reason or just interest?