If you have general questions about Emacs, the best places to start looking are the Emacs manual and the standard Emacs FAQ. If you already have Emacs, you can browse the manual using Info by typing C-h i m Emacs <RET>, and you can view the FAQ by typing C-h F. Or you can browse both of them online:
The official mailing list for Windows specific help and discussion is firstname.lastname@example.org. It's a majordomo administered list, so, if you would like to subscribe to the mailing list, send a message to email@example.com with the word subscribe in the body of the message.
To unsubscribe from the list, send a message to firstname.lastname@example.org with the word unsubscribe in the body of the message. Please do not send the unsubscribe message to the list itself, but to the request alias instead. Sending the message to the list does not unsubscribe you from it, and it tends to be annoying to people on the list.
The mailing list has a web based interface, and an archive of the list..