Resident evil on gamecube

OK so i have an old gamecube that still works and i just found the first resident evil game brand new and never played in the computer cabinet and i was able to get the game set up but the controls make no sense :( i dont understand how im supposed to work like do i use the arrows??? the yellow joystick?? or the grey joystick??? its so confusing :( if there are any wise old people out there plz help