Y-Rag

Hi, I'm new to electronics and have some questions regarding a project I am try to make. I want to turn a plastic corrugate display board using a Sankyo SHE9L motor. I have the frame and all made now I need the electronics. I think I should use a potentiometer to control the speed. If I use a 9V battery what size resistor should I use? Any other components needed? Also how should this be wired? Thanks for support anyone can offer.