Do to many inquiries, there is now an unofficial WordPress.com support site through Yahoo Groups called “WordPressdotcom”. If you have questions about WordPress.com or you would like to volunteer and help, that’s the place to go.
Thanks to Kafkaesquí for setting this up!
And if you have questions about wordpress.com, you can also ask them here on this blog, or check out the official WordPress FAQ blog.
You can find more help for all things WordPress through articles like Finding WordPress Help, Getting More Help With WordPress, Using the WordPress Support Forums, WordPress FAQ – Frequently Asked Questions, as well as on the WordPress Support Forum. Also check out the basic tutorials called WordPress Lessons in the WordPress Codex.