I love playing video games on my computer, but i am interested in becoming a game designer.  I would like to learn about that vocation.
Sure, I can tell you about it. Video game design is the process of developing the content and rules of video games in pre-production.
I have an idea for a game, so i should list all the rules and then make a story.  Got it.
Yes, a designer is like a director of a film; they control the artistic and technical elements of the game.
So when do i get paid?
Hah, well designers usually start as staff programmers who have shown a penchant for creativity.
Oh, it is a work for wages position.  i can live with that.  Is there a association or industry group i could contact to help me network?
Not to my knowledge. It is a highly specialized role of video game development. Some of the famous designers are Sid Meier (Sim 2000) and John Romero (Doom).
I have heard of Electronic Arts.  are there other big companies that produce video games and/or content?
Yes another one is LucasArts, which is licensed for Star Wars games.