how do you get to the headlights to change a bulb?

one of three ways, Underneath, from under the hood, or the removal of the front "headlight unit". Underneath is pretty straight forward, you will see a "access" panel, under it you will see the wiring for the bulbs and a "lock ring" Turn the ring, and remove the bulb. Form under the hood, you will see a "access" panel under it you will see the wiring for the bulbs and a "lock ring" Turn the ring, and remove the bulb. For the removal of the whole head light unit, there will be a few screws around the unit, remove them, but be careful not to touch the adjustment screws. then pop off the headlight unit. you will see the wiring for the bulbs and a "lock ring" Turn the ring, and remove the bulb. BUT remember to not touch the new bulb and dont let it come into contact with dirt/greese, This will compramise the bulb and will lead to a very short life. I would recommend that you pick up a Haynes manual for the right process for your car. Hope this helps