I've been interested in learning about Hinduism. What can you tell me about it?
There's a lot to talk about! Firstly anyone who considers themselves culturally or ethnically associated with aspects of Hinduism is considered as "Hindu".
Where does Hinduism originate from?
Hindus
Hindus () are persons who regard themselves as culturally, ethnically, or religiously adhering to aspects of Hinduism. Historically, the term has also been used as a geographical, cultural, and later religious identifier for people living in the "Hind" (Indian subcontinent). 
The historical meaning of the term "Hindu" has evolved with time. Starting with the Persian and Greek references to the land of the Indus in the 1st millennium BCE through the texts of the medieval era, the term Hindu implied a
whether they are practising or non-practicing or "Laissez-faire". The term does not include those who identify with other Indian religions such as Buddhism, Jainism, Sikhism or various animist tribal religions found in India such as "Sarnaism". The term Hindu, in contemporary parlance, includes people who accept themselves as culturally or ethnically Hindu rather than with a fixed set of religious beliefs within Hinduism. One need not be religious in the minimal sense, states Julius Lipner, to be accepted as Hindu by Hindus,