He was a very important god after he was dead.
teach others about enlightment
That Buddha was a god
Digity dogs
Theravada.
The Noble Eightfold Path.
This is an interesting question. The Buddha did not teach that there is a Buddha nature, possibly because of this very question. Later on, in Mahayana Buddhism, the concept of Buddha nature was invented.
Buddha didn't teach really much. People that saw him and heard his stories and what he believes wrote down the things they heard and people started taking his stories and beliefs as a way of life. The buddha was just a symbol of the religion.
About 50 years
Pali.
Buddhism change after the Buddha death- his followers developed many different interpretations of his teachings . Although Buddha forbidden people to worship him, some began to teach that he was a god.
Yes they have teachers and monks that teach the Buddhist philosophy.