dennis' little tumblr read at your own risk.

Joel Spolsky's Fantastic Mercurial Tutorial

A great tutorial on Mercurial by Joel Spolsky.  And aptly named, too.  If you have been tainted by Subversion or (shudder) CVS, make sure you at least read the first section.  Even if you don’t read anything else, read the first section.  Trust me, it’s that good.