Help me understand Hinduism

I am a non religious person and very interested in understanding Hinduism , I want to understand and learn about Hindu Gods. For example in almost any other religion there is God at #1 then he has angels and a Prophet who is usually his #2. So basically who is #1 in Hinduism and then #2 and so on. ( like a family tree etc. I tried online but it seems a little hard for me as a non religious person.