How does the German government work?

the German government is like a lot of western governments mixed together. The president is the leader of the country, but mostly doesn't do anything politically large. The leader of the party ruling the country has most of the power. This person is known as the chanselor. The German government is bichameral, like the U.S government. There is the house of representatives, the Bundes Rat, and then there is (name unkown) also called the Bundes Tag. These two senate like groups consist of people voted as the representatives of their Bundesland, or province, state, land area etc. They pass laws and decide if a law should be scratched.