Okay I know a bit about robotics and need some help with the arduino uno (the new usb one). I want to know if I can use the SeeedStudio Electronic Brick 250V Relay Module with the arduino uno. And if so, Can I then add the 12V 0.4A 36oz-in Unipolar Stepper Motor to it. I am sorry if this sounds a bit dumb I just can’t find my answer anywhere. 
Thanks for the help! 
You will need a stepper motor controller to in order to drive the stepper motor. As for driving the relay with an Arduino, there should be no issues.