Controlling a 4,3" LCD-Screen

Hey there,

I'm new with all this stuff and want to controll a 4,3" LCD Display (without Touch) with my Arduino (UNO or MEGA). All I want to do is to display a couple of Images depending on external buttons. What do I have to consider now? Can I use a display without a graphic processor for that use? And is there a lib that works with every display? Or does every Display need its own lib.

Can you guys recommend me a 4,3" display? It should be thin with a little installation frame and (if there's a difference) should be connected to as few wires as possible.

Thank you for help!