Jass is a very popular card game (in Switzerland) that is played with 4 people. It is relatively simple to learn the mechanics of it, but learning good strategy takes longer. The Jass Manual teaches you how to play and gives in-depth strategy suggestions gleaned from years of playing the game.
There are two versions of the manual:
Edits were last made on October 31, 2001. See the revision history for more information. For questions or comments, write to "marco [at] earthli [dot] com".