Buddism actually started from Hinduism only. There is a possibility that Buddist texts may be influenced by Hinduism and their sacred scripts.
sacred texts considered to be an early source of Hindu religion
The Hindu God Vishnu is the supreme being in the religion of Hinduism. He is the master of all and is described in this way in Hindu sacred texts and writings.
according to Sacred Texts Hinduism is a Religion of freedom. Anyone who is interested in Hindu Philosophy can participate in Hinduism.
If "classes" means castes, then no. Buddhism does not support the caste system as is present in the Hindu religion.
The early Hindu religion is known as Vedic religion or Vedic Hinduism. It originated in ancient India around 1500 BCE and was based on the early Vedic texts, known as the Vedas, which were considered sacred and authoritative scriptures.
any hindu can read the Sacred Texts of Hinduism. Mostly they are written in sanskrit so not everyone can read them.
Anywhere and everywhere. There is no proscribe place. All that is required that is you treat the texts reverently.
Originally Brahmanism was the Religion of Aryans. When they invaded India they brought their Religion & Sacred Texts to India. After that Dravidian culture began to Influence them.
The Hindu texts are too vast to be explained here. Please consult Vedic Pandits for the answer to this question.
Upanishads is one of the many sacred texts of Hinduism.
4 Vedas Mahabharata Ramayan and Puranas. Apart from that many Aryans Scriptures and Sacred Texts are there.
The Rigveda is one of the four sacred texts of Hinduism. It is one of the oldest texts in the world and forms the foundation of Hindu philosophy, rituals, and practices.