Finally, we have a launch date for the Polkadot "ICO":
Launch date
Sunday 15th October 2017
For more details check the official website: https://polkadot.network
Overview of Polkadot
FAQ
I also noticed that there was a new FAQ page. It covers many of the common questions that arise.
Polkadot Market
This is a community run sub-reddit where folks can talk about the ICO and anything Polkadot related: Polkadot Market