Second Life is a virtual 3D community created in 2003. When the user becomes a member, he/she becomes a new resident and is given a new identity by using a name and a virtual avatar to represent himself in this virtual community.
Second Life’s virtual world also includes sound/visual environments such as wind and rain, audible conversations, built-in chats and instant messaging. Residents buy property, start businesses, game with other residents, create objects, join clubs, attend classes, or just hang out.
Second Life can also be used as a platform for an e-learning environment. The good thing about Second Life is that, unlike most of the other e-Learning environments, it brings the student into conditions which are very close to real-life situations. It is well suited for direct interaction and working in a specific virtual environment. All of this can be done by programming the avatar to act like a real person and interact with other avatars (other members). This is a good example of immersion into worlds which can extend someone’s perception of reality, and project it into this virtual reality.
The video below shows some examples of how Second Life can be used to provide training simulations. You can find other useful links within the same page.