The Coppermind is a comprehensive wiki about Brandon Sanderson and all of his work including the The Stormlight Archive and Mistborn, both of which are set in Brandon's connected universe, the Cosmere. The Coppermind also includes information on Brandon's non-cosmere works, such as Skyward, Reckoners, and Alcatraz. It is owned and administrated by the 17th Shard.
Here's a list of the Coppermind Synod. Please contact them if you have any questions:
The Synod are assisted by a group of Keepers who are also open for questions.