The obvious answer to this questions is "Just read the source..." but I still want to ask if someone is aware of a good overview of the OpenBSD source code? I've watched several presentations by Ted Unangst, Jason Dixon and co. and there seems to be a good amount of information spread across the web, but not a single canonical reference besides the source code (yes, I know source is very important).
I know the base of code is very very large, so maybe instead of the whole repository, how about important parts/subsystems? Are any of you aware of such a document or documents? Are there areas that are easier for "relative newbies" to start in versus other areas? (eg. wireless drivers vs. SMP) Is there something like an "openbsd janitors" project where newbies can start? Thanks in advance. -Adam