I RECENTLY BOUGHT NIKON D7100?

I have couple of questions in regards of my purchase for my new camera (Nikon D7100)

1.Is it necessary for me to go to Photography School to be Professional Photographer, I not even a "professional" at least kinda close to becoming a professional one?

2. I'm currently studying about the "aperture" in Nikon's User Manual, can I adjust my camera's aperture manually if I have NIKKOR LENS AF-S 18-105mm f/3.5 - 5.6G ED VR, or I need to buy a specific lens like CPU lens?

3.Is there any website I can go for "FREE" training?

The fastest way to learn how to use a fully adjustable camera like your fine D7100, is to at least take one class in photography. How far you go with it, is up to you.

Most professional photographers have some level of formal training, some knowledge of running a business and marketing and years of experience, usually either as an assistant to a successful photographer or as a staffer for a newspaper, magazine or large PR firm

For now, you can visit this site to learn now to balance ISO, shutter speed and lens aperture.

http://camerasim.com/camera-simulator/

2. Your lens IS a CPU lens and you can adjust the aperture directly in either "A" or "M" mode.

Your question makes me want to cry.