If you are serious about learning to make games for a living (after all there is a shortage of educational games!) then check into some of these links so that you can start being prepared now.
A couple of the earlier mentioned links that are useful are:
http://www.gamedev.net/reference/articles/article261.asp A fairly comprensive site for serious game makers can be found at with good advice starting at “OK! What do I do before starting a game?” Written in 1999.
http://www.eecs.umich.edu/%7Esoar/Classes/494/talks/Game-timeline.pdf Awsome, detailed, professional.