At tonight's RPIACM meeting, I gave a presentation on using git. The subtitle says, "to increase your productivity." While I don't explicitly mention productivity, the tutorial does provide a strong introduction to git and the core ideas behind it.
If you've never used version control, or never used git, this presentation should hopefully be enlightening to you (and the ways to increase your productivity should be obvious to you).
Anyway, the slides are not published. Instead, the slides are available via git:
git clone git://robescriva.com/gittalk
Comments and feedback are always welcome. License is Creative Commons Attribution. You may use this, even for commercial purposes, but you cannot take credit for writing it.