If you go to the Harley Davidson home page and create a profile for yourself, you can then log on and see the on-line version of the owner's manual for your bike.
The garage door opener...you should have gotten a receiver that ties into your existing garage door opener. It looks like this: http://www.harley-davidson.com/gma/gma_product.jsp?PRODUCT%3C%3Eprd_id=845524442250293&FOLDER%3C%3Efolder_id=2534374309148480&ASSORTMENT%3C%3East_id=2534374309148480&locale=en_US&bmUID=1312060770785&bmLocale=en_US There's a PDF download for the instructions.
You have to plug it into a 115V outlet in the garage, preferably as high up as possible, but that may not be absolutely necessary. Then, you pair it with the bike by getting someone to hold the button on the receiver down while you toggle the high/low beam on the bike. If you didn't get the receiver, you should have...along with several other things. All that stuff is in the TP when they get the bike, but they usually take it out and put it somewhere so folks don't pilfer through it when the bike in on the floor.
Gold Key
CVO indoor cover
2 headsets w/cords
Pleather document holder
GPS
Liner bags for the saddlebags and the TP.
Ipod
I'm probably forgetting something...