Computers are used occasionally throughout the course.
However, we only need (and want) 1 computer for each 2 students; e.g., if 16 students, then 8 computers. Often, it is possible for students to bring their own laptop.
A network IS required, across which the shared Wiki is available to all members of the workshop.
Any Wiki is sufficient. The organization probably already has an official or semi-official wiki installed, in which case we will use it.
Otherwise, i suggest installing Twiki wiki; available here