Hello I will help you with your question,
You can reach the bulb socket from the back of the lamp, turn it 90 degrees counter clockwise and pull it from the lamp housing and pull the bulb straight out of the bulb socket
Click here for procedure
Let me know if you have trouble opening the link the site has had problems today posting the links
No you can reach in behind the light and twist the bulb holder to remove it from the lamp
If you feel you need to pull the whole lamp out pull the two pins on top and the whole assembly will come free. You would have to do this to replace the headlamp bulb
Let me know if you have further questions about this
No you do not need to disconnect the connector and there is not enough voltage to hurt yourself so don't worry about that. Turn the bulb holder 90 degrees and it will pull out of the hole in the lamp housing as shown in the first diagram I posted. You have the pins out of the headlamp and the headlamp pulled out?
The first time you do something is the hardest, after that it is easy so no need to be sorry just let me know where you are having trouble and I will try to guide you.
The turn bulb can be removed without removing the lamp housing but it may be a stretch to get it turned all the way while it is still plugged in. You disconnect the connector from the base of the bulb holder.
I am glad you were able to get it out, if you look on the bulb base it will say 3057 or 3157 and that is the bulb number. Either one of those will fit, the base may look a little different but it should plug right into the socket.