The Buddhist way to stop being selfish and greedy is called The Noble Eightfold Path. The Sangha is the community of people who follow the teachings of the Buddha. Their hope to gain enlightenment which is a perfect peace called Nirvan, and to do this they have to have the help and friendship of other members. Some of the first followers of the Buddha gave up their family life to travel around spreading the teaching of the Buddha. They shaved their heads and wore yellow robes.
Monks now shave their heads and wear orange robes.
Nowadays Buddhists keep many things in their houses to remind them of the Buddha's teaching. Their temple is called a Vihara and Buddhists worship there whenever they can. They take off their shoes before they go in and light candles in front of a statue of the Buddha. They give flowers and food to the Buddha.