One can of course project films, but why not also conferences or courses?-
Mobmov.org - Mobile Movie presents in detail and in an accessible way how to assemble a mobile unit of film projection and vidéos.
There is well a little technique to consider, and also aspects practise really concrete: financing, royalty, planning, relationships to the community where you project, etc.
The whole of a minimal presentation, the meeting of projection, but is just like accompanied by a tutoriel, a forum and an animated community. In short, a good site to pass to the action.
One can of course project films, but why not also conferences or courses?