Belief of Buddhists

In fundamental Buddhism, the emphasis is on seeing Truth, on knowing it, and on understanding it. The emphasis is NOT on BLIND faith. The teaching of Buddhism is on "come and see" but never on come and believe. Buddhism is rational and requires personal effort, stating that by only one’s own efforts can Perfect Wisdom be realized. Each individual is responsible for his or her own emancipation from anguish and suffering.

Buddhism allows each individual to study and observe Truth internally and requires no blind faith before acceptance. Buddhism advocates no dogmas, no creeds, no rites, no ceremonies, no sacrifices, no penances, all of which must usually be accepted on blind faith. Buddhism is not a system of faith and worship but rather it is merely a Path to Supreme Enlightenment.
The Buddha referred to his teaching as simply a raft to leave this shore of suffering and impermanence, and to get to the other shore of bliss and safety, True Permanent Reality, Nirvana. Upon realization of Nirvana, the raft is no longer needed.

The Buddha referred to his teaching as the Middle Path, called this because it avoids the extremes of both self-indulgence in the world and the self-mortification of strict asceticism. The path he taught incorporates both intellectual progress plus spiritual progress with practice that reflects compassion, morality, wisdom and concentration while at the same time seeing and understanding the world of existence as it truly is.

All of the many teachings of the Buddha centre on the Four Noble Truths, just as the rim and spokes of a wheel centres on the hub. They are called "four" because there are four of them. They are called "Noble" because they ennoble one who understands them and they are called "Truths" because, corresponding with reality, they are true.

Beginners to Buddhism are handed lists of doctrines -- the Four Noble Truths, the Five Skandhas, the Eightfold Path. One is told to understand the teachings and practice them. However, "believing in" doctrines about Buddhism is not the point of Buddhism.

What the historical Buddha taught was a method for understanding oneself and the world in a different way. The many lists of doctrines are not meant to be accepted on blind faith. The Venerable Thich Nhat Hanh, a Vietnamese Zen master, says "Do not be idolatrous about or bound to any doctrine, theory, or ideology, even Buddhist ones. Buddhist systems of thought are guiding means; they are not absolute truth."
The absolute truth of which Thich Nhat Hanh speaks cannot be contained in words and concepts. Thus, merely believing in words and concepts is not the Buddhist path. There is no point in believing in reincarnation/rebirth, for example. Rather, one practices Buddhism in order to realize a self not subject to birth and death.
Many Boats, One RiverTo say that doctrines and teachings shouldn't be accepted on blind faith doesn't mean they aren't important. The myriad teachings of Buddhism are like maps to follow on a spiritual journey, or a boat to carry you across a river. Daily meditation or chanting may seem pointless, but when practiced with sincerity they have a real impact on your life and outlook.
And to say that Buddhism is not about believing things doesn't mean there are no Buddhist beliefs. Over the centuries Buddhism has developed diverse schools with distinctive, and sometimes contradictory, doctrines. Often you might read that "Buddhists believe" such and such a thing, when in fact that doctrine belongs only to one school and not to all of Buddhism.
To compound confusion further, throughout Asia one can find a kind of folk Buddhism in which the Buddha and other iconic characters from Buddhist literature are believed to be divine beings who can hear prayers and grant wishes. Clearly, there are Buddhists with beliefs. Focusing on those beliefs will teach you little about Buddhism, however.
If you want to learn about Buddhism, I suggest putting aside all assumptions. Put aside assumptions about Buddhism, and then assumptions about religion. Put aside assumptions about the nature of the self, of reality, of existence. Keep yourself open to new understanding. Whatever beliefs you hold, hold in an open hand and not a tight fist. Just practice, and see where it takes you.

Do Buddhist believe in god?
No, we do not. There are several reasons for this. The Buddha, like modern sociologists and psychologists, believed that religious ideas and especially the god idea have their orgin in fear. The Buddha says: "Gripped by fear men go to the sacred mountains, sacred groves, sacred trees and shrines".