Take off the back of the toilet. Look down to the bottom and you'll see a flap that is raised when you flush it. That flap is leaking. IF the toilet is old I strongly recommend the Gerber viper toilet. Inexpensive and works great.
It depends on which hemisphere you live in... If you live in the northern hemisphere of the world the water will flow clockwise. If you live in the southern hemisphere it goes counterclockwise. I'm...