How to start drawing pictures of naked girls?

[iamsexy99]

I am interested in the human body. I think girl's bodies are just beautiful and theres something about it that interest me. No, this is not some sick obsession, i just like the human body. The movie cashback inspired me but i wanted to know how to start drawing naked women. like is there any books that can teach me or any step to take? Please, serious answers only