coming from git, understanding mercurial branching

[Tim Chase <git@tim.thechases.com>]

I've got a pretty good grasp on git's rather straightforward
branching, but am trying to wrap my head around Mercurial's
branching.  There seem to be several flavors, some default to
push-public, while others are private; some are tracked in history,
while others seem more ephemeral; often the docs suggest cloning
instead of branching; detached heads seem more normal in the
Mercurial world.

Do any git users here have good "understanding Mercurial branches
for the git user" resources they've found helpful when working with
Mercurial?  Preferably a "for dummies" resource with illustrations &
comparison charts so I can see the big picture.

Thanks

-tkc


PS: I've read a couple Mercurial resources including
http://mercurial.selenic.com/wiki/GitConcepts
but it didn't really dig into comparing the mental models used in
branching.