What are a Hindu's beliefs?

Hinduism is not a a religion. The people who are commonly known as Hindus are Arya, clans from Mediterranean land. They divided themselves in three castes, Brahmin, Vishya and Kshatriya and one purified, religion or rich people, Jainism.

They were barbarians who invaded Indus valley civilization 2000 BC. They were Sun worshipers, simply because Sun was a scarcity in those areas from where they came. After invading Indus valley civilization, they embraced all Gods and Goddesses from time to time who were worshiped in Indian subcontinent but kept them at lower level.

Hindus change their believes according to political and social needs. There are many (more than two thousand) sects and groups of Hindus who differ from each other. For example a Brahmin of Bengal would celebrate Kali goddess on Dipawali and enjoys wine and von-veg but a Brahmin of Haryana would worship Laxmi Goddess and abstain from wine and non-veg on Diwali.

Many Brahmins tried to imposed their illogical sayings to Hindus, but no one believes in their illogical stories. Thus people of India who are consider as Hindus, celebrate their religion as a mix of all communities and cultures surrounding them.