Zope course by Upfront Systems
The courses don't presume a lot of background, and are suitable for a wide range of audiences --- as long as they're willing to work hard :)
While writing, we chewed through masses of HowTos, READMEs, books and manuals available online. Therefore it's only right that we license these courses under an Open Source license. We've chosen the Creative Commons Attribution-NonCommercial 2.0 license, because we like the work that the Creative Commons guys are doing to widen the acceptance of Open Source licenses.