Rather than reinvent the wheel, here are the relevant links for Windwalker resources:
Guides:
PeakOfSerenity - A Monk site for Monks, by Monks
WoWHead - The site for all your WoW needs also has a guide, maintained by Babylonius.
Other:
Discord - the main chat channel for conversations about all things Monk
CheckMyWoW - This site focuses on analyzing WarcraftLogs data to tell you how you performed. It is currently still under construction but the Windwalker portion works well enough and will be improved over time.
As more resources become available, I will add them to this list.
- - - Updated - - -
May want to review the last few pages of the Legion discussion thread as much has already been answered there:
http://www.mmo-champion.com/threads/...ussion/page107