how do i sell my pictures online?
i am trying to sell my stock photos but i dont know what site to go on

i am trying to sell my stock photos but i dont know what site to go on
I am almost 16 years old and I am a very good photographer and I love cameras and taking pictures. I have many really good pictures mostly of nature and buildings. I’m positive other people would buy my work.
Can I sell my pictures online?
How would I go about doing this?
How can I start doing this?
I see stock photos being sold on CDs and online. How can I get my pictures available to these publishers to be resold by them or used directly? What pictures are in demand today? Is it necessary to buy na high-end digital camera? I have a basic Olympus F-270.
I am a pilot and I have been selling pictures of people’s houses to pay for flight time. I would like to make a business out of it but how to pay the bills is the big question any ideas
I hear ebay but I am not sure if they mean digital photos or not. Plus i am about to try many different stock photography sites but i was wonder if there are any other ways?