Top down space game Rotation help.

Hi Everyone, I am developing a top down space game but when I move the Player Gameobject it goes forward and backwards fine But the Player object won't rotate/I don't know how to make it rotate :P. This has probably been asked elsewhere but I couldn't find a solution so a link to a tut or other question would be fine. Also I would like the Player Object to move forwards in the direction the ship is now facing. Cheers