Head light bulb replacement is normally straight forward unless its got HID/Xenon type bulbs which is more expensive for parts and labor to replace. Any parts store are usually helpful if they sell you the bulb they may offer help in fitting it. If not look on Youtube lots of good "similar video clip". Autozone have some popular workshop manuals for free on line once you register (for free) on their website http://bit.ly/autozone_repair_info .There is a company that independent auto repair shops "buy" their information from that offer a very reasonable service to do it yourselvers. You get a one year subscription to year make and model specific repair procedures, service bulletins, component locations, wiring diagrams ect.... great quality information same as the professionals have ,much better than generic workshop manuals from parts stores, much cheaper than the factory manual. http://bit.ly/alldata_repair_manuals or try http://bit.ly/mitchell_repair_manuals_online and get an online repair manual subscription.
Don't touch the glass of the bulb when replacing the bulb, the sweat on your hands shortens the life of the bulb.