Don't worry about buying the camera body and instead focus on a lens system. Camera bodies can always be upgraded while the lenses can always be used from one camera body to the next. So find a lens system - Nikon, Cannon, Sony, etc..... - that you can readily find and buy cheap and buy into that system. Good pictures and good video depend more on the lenses than they do the camera body. Most cameras, even your cheap used cameras will shoot 1080 video and will take pictures above 16mp so don't worry about the quality from the camera body. Get a good lens system and learn to use the camera well, watch some videos about composition and lighting. Remember the most important piece of camera gear is the 12 inchs behind the camera.