The link above will take you to further links -- to other instances when this very question was asked here. There are many good responses in the answers given to the students' posts. Please take the time to go through these and find good sources for the information you need.
I suggest you Google Hinduism and scan the descriptions of the websites. Read three or four sites carefully. Take notes on the information that answers your questions.
The first five or six sites listed in Google have tons of excellent information.
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