Human beings (and avatars) are very social, and they are used to learning in a social way. Some events have a strong social component (for instance the Meet and Mix party) and you will be asked to talk to each other, so that you can know each other better, use the language to try to express what you really think, feel and do, and learn from each other.
Other events, like “My Top Destinations in Second Life”, are open to native and non native speakers. For the non native speakers it is a excellent exercise and a challenge, and I’m sure that they will learn a lot. We are looking for volunteers for “My top destinations in Second Life, would you like to be one of them?”