The fine folks at DIY Drones have created a new ArduPilot plugin for Gazebo. Check out their blog post for more information. Their demo video, below, is an impressive demonstration of the ArduPilot plugin and Gazebo.
Documentation and support materials are extremely important, especially when using a complex system like Gazebo. First time users of Gazebo typically face a large learning curve that can be daunting. In an effort to reduce this learning curve, we have added new tutorials and restructured the tutorial system. A new section, called Guided, features tutorials that offer more structure. The first set of Guided tutorials are targeted to beginners. Over the next few months additional tutorials for intermediate and advanced users will be added.