You have a lot of decisions to make. The general componets you will need are. The Geckos are ready to use when you get them. Hook up the wires and adjust your gain.
1) Motors, stepper or servos?
2) A power supply if you go with steppers.
3) Drives, either way, you will need these.
4) A breakout board.
Steppers systems are genrally a lot less expensive. Before you start buying parts, do some research. We will help all we can. Some boards have the drives built into them. I'm way partial to the Geckos. They are very nice.
Brett