To give you an idea, here are some of the custom designs you can chose from for your website.
This is a great way to also keep tabs on your friends who may be planning their weddings or look to others for inspiration. While working on your website, you can also check out some of The Knot's other tools like their guest list manager and wedding budgeter. There's even a section where you can find local vendors and another for honeymoon ideas.
The Knot is basically everything you need in one spot for weddings. They also have sister websites The Nest and The Bump for home and family life ideas and advice.
I highly recommend using The Knot to help you with devouring the details for your big day!