Card Games
CardGames - http://gamerules.org/
Find rules to the most popular cardgames.
Solitaire Game Rules - http://solitaire-game-rules.com/
Contains information about how to play solitaire games.
Spider Solitaire - http://www.spider-solitaire-download.com/
Provides everything you need to know about the game: rules, strategy tips, list of similar games, and useful links.