A Wiccan handfasting might be in your future if you are living in this religion and want to encorporate some meaningful rituals into your life. And if you have no idea what I'm talking about, this means a wedding. Hands are bound together as part of the ceremony, which is the meaning behind the name. Weddings in medieval eras were often of this type, especially before the onslaught of Christianity.
While there are some traditional aspects to a handfasting ceremony, such as jumping the broom or tying your hands together, there really isn't one official Wiccan handfasting ritual that I can pass along. And since they are usually fairly long and involved, I am not going to write page after page of ceremony scripting either.
Firstly, here are a few suggestions for the types of things you might want to include in your ritual. How you organize everything is strictly up to you.
All Seasons Weddings - They have a nice selection of vows and words to be read by the officiant, but not really complete rituals.
Ecauldron - This is a great sample ceremony that includes Deities, elemental blessings and jumping the broom.
Since your wedding is a pretty important event, there's a good chance you are going to want a little more input than a handful of websites. There are a few good books on the subject that you might want to read:
Is a Handfasting Legal?
Well, as long as you have a legal officiant to preside over your Wiccan handfasting, then yes it is a completely legal marriage. Many people who can legally perform weddings are happy to accommodate any specific ritual you like. If you choose to just get a local priestess or coven-mate to perform the ritual, then it probably won't be. You do still need to get a proper marriage license as is required by your state or province.