What camera should I buy?

You simply cannot buy a bad camera these days. The technology is amazing and even the simplest consumer grade cameras produce image quality better than that of the pro cameras from 10 years ago. The main features you need in a camera are the ability to control aperture, shutter speed, and ISO. And the ability to change lenses. Past that everything is bells and whistles. I recommend buying the best camera you can possibly afford so that as your skills develop your camera will keep pace with you.