TLA+ Community: what to do when you’re stuck
There is a very active google group:
https://groups.google.com/forum/#!forum/tlaplus
The TLA+ subreddit is also quite active:
https://www.reddit.com/r/tlaplus/
You can ask questions also on stackoverflow:
https://stackoverflow.com/questions/tagged/tla%2b
twitter:
https://twitter.com/tlaplus