Posting in the Magento forums has been disabled pending the implementation of a new and improved forum solution which should better serve the community.
For new questions please post at magento.stackexchange.com, the community-run support site for the Magento community. We will be providing updates on the new forum solution soon. For questions or concerns please email email@example.com.
The one thing about open source is documentation is a little scarce at the best of times. But this project is far and away the best one I have ever used. Between the sub-menus under Support and the Community options you should find everything you need to get you up and running quite quick.