Interested in helping with documentation

[CL Moonriver]

Hi all,

I'm pretty new to the community, but I'm interested in helping out in 
various ways. I don't know that there's a lot I can contribute yet 
(being so new), but I have noticed there are places in the documentation 
that are out of date and I could fix. For example, section 5.6.1 lists 
the Xorg xdm config files as being in /usr/local/lib/X11/xdm which it 
seems they are not in newer versions of FreeBSD. I found them in 
/usr/local/etc/X11/xdm. So at least when it comes to noticing errors 
like that, and fixing them, I think I can contribute.

I know the basics of Docbook and version control, so if there is a 
preferred way to submit corrections using diff files or something, I 
should be able to pick up on that fairly quickly.

Anyway, I'd love to help out, and just looking for some guidance on how 
to get started.

Thanks!