Your going to need more then the stamp module. For experimenting you'll need either a work board or a solderless bread board. Look at these.
http://www.parallax.com/html_pages/p...ing_boards.asp
On the stamp web site look at the stamps in class tutorials. They start out with simple projects and progress to some good stuff. The basic stamp is well documented and supported but they're expensive. The basic stamps are also kind of limited. Since you are ready invested you might as well keep going with the stamp. When you want more power but the simplicity of programing in basic you might want to go to this chips. They use PIC 16 and 18 microcontrolers.
Kronos robotics
The Kronos basic allows in line assembler so you can take these chips pretty far. After your skills improve and you want to start playing more with robots, the vex kits provide allot of bang for the buck. Still the buy in is 400$.