I will be posting on four posts since the info is too large for one post
I strongly urge you to only shoot a wedding if you:
1. Are certain of your photographic skills. Wedding coverage is not an arena in which a person should learn to use his or her equipment. It is difficult enough to get proper coverage when your equipment operation is second nature to you. It is pretty darn near impossible to effectively cover a wedding if you are unsure about the technical details of your equipment.
2. If you have proper equipment - cameras and lenses that will allow you to do quality 8x10 inch prints at a minimum. Also you MUST have back-up equipment immediately available. Redundancy is the name of the game. Shooting with one copy of any equipment (such as camera, proper lens, proper flash) is inviting Mr. Murphy to bite you in the "you know where spot".
3. If you have enough flash cards, batteries, etc.
4. You have attended enough weddings to be fully aware of the general flow of a wedding ceremony. All weddings are different but, all are the same in many respects. Most weddings are open to the public. It would be beneficial to have attended enough receptions to have the same grasp of the general sequence of events. However this is more difficult to do than attending weddings. Most church/synagogue weddings are open to the public; this is not true regarding receptions.
5. If you have studied wedding images online and in books and magazines; and have predetermined how you want to shoot the essential shots.
6. If you are willing to put the time into shooting the ceremony and not to be a guest or to interact during the ceremony/reception. The two most difficult weddings I have ever shot were of my two very beautiful step-daughters. I did not want to shoot the weddings because I wanted to take part and to enjoy them. They both, however, made it clear that they wanted and expected me to do the job. I got some beautiful results but, I missed sharing those wonderful occasions as a participant and guest. I was also not able to be next to their mother, my wife during the ceremony. Additionally, I am not in any of the formal pictures. One of the two weddings was formal and I had to wear a tux. Tuxedos are not convenient clothing to shoot a wedding in.
The great nature photographer, Moose Anderson, recommends using two teddy bears (one white and one dark brown) to practice exposure in shooting animals. Piggy backing on his technique, I recommend that you practice shooting a lot of white objects, especially lace along with dark objects to learn to keep detail in the wedding gown and avoid burning out the white areas.
A great book for the type of shots, etc. is "Wedding Photographer's Handbook by Robert and Sheila Hurth, Amhurst Media. Unfortunately, my copy is ten years old. It might not be available and if it is - the equipment selection is out of date as is the information regarding exposure, etc. since the book was written for film photographers, not digital addicts. Otherwise it is a pretty darn good book.
Communication is the name of the game. Communicate with the bride and groom and, especially, the Mother of the Bride. Learn the sequence of events so that something such as the candle lighting doesnt come as a surprise to you.
Some wedding related web sites with useful information and valid tips:
Do a Google search for wedding photographers and look at the shots they use to advertise their proficiency.
INDIVIDUAL WEDDING PHOTOGRAPHY EXAMPLES
Tampa Photo M.J. Wilson
http://www.tampaphotoweddings.com/gallery.html
http://tampaphoto.com/ls2pj/
Tom Ellis Photo Seattle, WA
http://www.tomellisphoto.com/
Indianapolis and Cincinnati Wedding Photographers
http://www.proweddingphotos.com/
Gary Seim Emphrata, WA
http://www.wildpix.biz/wedding.html
Ron Estes Photography S.E. Pennsylvania
http://www.ryanestes.com/about.htm
Roddy McInnes Photography Boulder, CO
http://www.roddymacphoto.com/
Wendy Woods Photography Minneapolis-St. Paul
http://www.wendywoodsphotography.com/detected.php?page=&pass=
Spellbound Images Upland, CA
http://www.spellboundpix.com/
The Many Lives Garland, TX
http://www.themanylives.com/
Evoke Photography Pasadena, CA
http://www.evokephotography.com/
WEDDING PHOTOGRAPHY GENERAL SITES
Onewed.com provides links to many commercial wedding photographers
http://www.onewed.com/vendors.php?category=126&state=CA&submit=Search&name=vendors
Photocamel.com provides numerous wedding related posts including examples of wedding photography.
http://www.photocamel.com/index.php/board,20.0.html
photosig.com provides (at the time of this writing) over 2,600 posts of wedding pictures
http://www.photosig.com/go/photos/browse?id=25168
http://johnlind.tripod.com/wedding/
This is an older web site that deals with film cameras. However most of the other information is as valid now as it was when it was written.
http://www.christophermaxwell.com/wedding-photography-tips.htm
Wedding Photography Tips which are, again, mostly film oriented.
http://www.planetneil.com/faq/flash-techniques.html
Excellent article from a professional wedding photographer on how he uses flash to achieve natural lighting at weddings.
Joe Demb Flipit Diffuser
http://www.joedembphotography.com/flipit/
Chuck Gardner
http://super.nova.org/DPR/#Index
http://www.planetneil.com/faq/flash-5.html
88 Must Take Wedding Photos
http://home.ivillage.com/entertaining/weddings/0,,q5hb,00.html
U.K. Wedding Site
http://www.despugh.co.uk/