I have zero experence with the video game second life. Can someone please answer the following questions to help me understand it?

How is entry to and participation in the virtual environment achieved (e.g., software, account registration)?

What are the basic controls for movement and visualization?

What are the tools, methods, and conventions of communication?

What are the techniques and capabilities for avatar modification?

What opportunities exist for advanced participation (e.g. commerce, competitive interaction, design, and building)?

What are the ethical issues relating to each of the following:

Age representation/verification and the control of access to age-inappropriate material...are existing controls adequate?

Intellectual property/copyright are intellectual properties (music, copyrights, images, characters, etc.) being improperly used?

Online commerce. . . .Linden currency can be purchased and exchanged for real money. . .should economic activity in virtual worlds be taxed?

Other?