[wwrap]

http://kernelnewbies.org/

"Kernelnewbies are a community of people that improve or update their Kernels and of aspiring Linux kernel developers and more experienced developers willing to share their knowledge. We help each other learn how the Linux kernel works and occasionally discuss other operating system kernels."

http://kernelnewbies.org/KernelHacking

Includes docs on:

How To ...

KernelBuild - build a custom kernel

KernelSafari - taking apart the kernel to see how it works

UpstreamMerge How to submit your patch to the upstream kernel.

join the Kernel Janitors and/or Linux Driver projects

CareerAdvice for people who want to get a job hacking the kernel

KernelHackingTools to edit/navigate/hack the kernel source