Welcome to the forums!
Quote: "I would like to know what commands I need a good grasp of in order to start creating a character generation program(i.e. like the one found in the Fallout Games)"
Accept that this answer is, while slightly exaggerated, not far from the truth: all of them.
That being said, if you want to get started, check out TDK's tutorials. They will give you a good start for learning the language.
Great Quote:
"Time...LINE??? Time isn't made out of lines...it is made out of circles. That is why clocks are round!" -Caboose