There's an eleventh one, which should probably be given number zero for being top priority: read this essay and live by it:
Lesson Zero: Don't Be A Sharecropper: http://www.tbray.org/ongoing/When/200x/2003/07/12/WebsThePla...
Lesson Zero: Don't Be A Sharecropper: http://www.tbray.org/ongoing/When/200x/2003/07/12/WebsThePla...