If you want to be in the business, you need to know the business. Reading magazines and visiting association meetings will help you for sure. The following list contains links to both physical and online magazines, trade associations, conferences, and developers associations.
Game Developers Magazine: www.gdmag.com
International Game Developers Association: www.igda.com
Game Developers Conference: www.gdconf.com
Game Developers Conference Europe: www.gdc-europe.com/
Association of Shareware Professionals: www.asp-shareware.org/