We will go through the building of a theme starting from nothing but stock Drupal 6. No Views, Panels, Zen, or other new-fangled devices.

You should know some HTML and CSS, but that's all that's needed. No PHP experience is necessary ... we'll cover the four lines of PHP you need for basic theming.

How far we get depends on how long the session runs (so, um, how long do these sessions run?) and the participants' wants/needs.

Almost guaranteed to be ugly, but the theme will be your own.