I am not sure if this was asked here before.
My friend bought a Nikon D5100 camera, and I am really curious to know which camera should I buy to start learning photography and also working with it. The idea is of course make money with my work. I have some ideas but I need to study more about techniques.
In my country, due to taxes, cameras are really expensive, so we have to buy abroad. Since I have no knowledge on what model to buy, I would like to know which cameras do you recommend, and what are the major difference between the D series (D3100, D5100, D7000, and so on).