In addition to providing some of my favorites links, this page is also a demonstration of the Web Links module.
These links are specifically about Drupal.
Drupal is, in my humble opinion, the best content management framework available - and it's open source, so it is free (of course you may make a donation).
Drupal has discussion groups too. This is where you can get in on the action.
This is where to find all the skinny on Drupal's Application Programming Interfaces.
This link should show that it is not working.