Wierd Starter/Car problem

Hey everyone thanks for your responses in advance.

When I try and start my car I can hear the starter just spinning as if the cylinode isnt engaging, I figured it was fucked and went out and bought a rebuild one. I install it and again I get the same problem but Im sure its somthing else now. When I try to do anything electrical with my car, dash lights turning on/my lights/even just popping them up nothing happens.

Anyone have any idea what the problem is?

alternator? check the alternator fuse…mayb the starter fuse? or just check fuses!