Advanced WordPress Facebook Group
If you asked me what single location on the internet hosts the liveliest conversation between WordPress developers, I’d point you to the Advanced WordPress Group on Facebook.
Moderated by the great Matt Cromwell (of the Give plugin and lots else), Advanced WordPress is a fire hose of truth on how to be a good WordPress developer—mixed in with just enough pleasantly irritating uninformed questions (“What’s the fastest way to covert [sic] a site into WordPress?”) to get that keyboard clacking.
It’s a closed group, but there’s almost 24,000 of us in there; you just have to ask to join. Come in, the water’s warm!