Adobe has launched a new community help system for Lightroom!! The new site combines the information from live docs with the ability to post comments, ask questions, and delve deeper into a topic.
All of the basics are there. But now you can click on the Learn More link at the bottom of each help topic for more information and useful sites and tutorials. Go and take a look at
http://learn.adobe.com/wiki/display/LR/Home.
The site is administered by Adobe, moderated by experts from the community, and developed with the assistance of a panel of Lightroom Learning Advisors. So you'll also find links to the moderators’ and advisors’ favorite Lightroom sites, plus links to troubleshooting sites and a page that lists third-party presets, galleries, and extensions.
