On Fri, 27 Nov 2009 04:54:17 -0800, Carl Worth <cworth@cworth.org> wrote:
> Do you happen to know some good documentation for how to get started
> with gnus for reading mail? I'd be happy even with the bare minimum to
> just get gnus to view one single message from out of my mail
> store. (Which is something I tried to figure out from the gnus manual,
> but I neve succeeded.)

The easiest way to view a mbox in gnus is using Foreign Group, IMO.

Start gnus then type C-u Gf, it will ask the file location and file
type. You can also use Gm to add other foreign groups, but they still
need some basic settings.

Cheers,
          Kanru