Interior Lights, Nav, radio and ect not working

for some reason my navigation buttons like MAP and the button on around the navigation's only about 3 of them are working the rest are not. the radio button that says 1-6 which are the preset button only some of those lights work. i was wondering if those are bulbs i have to buy or need to be changed or ect. i read ton of diy and all i see is the BLue led conversation one thats way too advance for me especially with soldering this and that