Where do I sign up?

I have been using FreeBSD and tinkering with it for about 4 years now and I want to take on a bigger role in the community and really work on the FreeBSD operating system at a lower level in my free time to expand my skill sets. I know a little Assembly and am pretty versed in C. Any tips on where to start this journey? What are some good resources on the kernel source? Anyone want to give me some pointers on the directions I should go?


- J