Must dslr?or csc can?...any preferences?must brand new?

Resolution doesnt translate directly into quality..u need to take into account the sensor size and capabilit .the zooming part if ur into this high end camera level depends on the type of lens u r going to mount on the camera..example: wide angle lens is for taking wide picture, telephoto is when u want to zoom in and get a close up image..that plays huge part in its pricing also..so u need a beginner camera with a good zoom lens..is that it?

A second hand nikon d7100 is a good base..24megapixel without olpf ensuring sharp image with that excellent sensor..may i know what u r planning to shoot?..do u shoot wedding stuff or any other kind of photography..if going the canon route a 70d is also good but im more familiar with nikon..canon guru can help on that one..

..u need to tell me what u want to shoot with the camera then i can recommend what lens u need to go for..