In your Inventory window is a folder with Linden-provided stock content, including avatars, textures, etc.

Second Life Official: Interviews, Video Tutorials, & Machinima

QUICKTIP: What is the Library?

Second Life is a 3D virtual world entirely created by its Residents. Since opening to the public in 2003, it has grown explosively and today is inhabited by millions of members from around the globe. This podcast features: (1) insightful interviews with Linden Lab staff, (2) Video Tutorials by Torley which teach you how to use SL in a fun and fast fashion, and (3) selected machinima works by community creators. You can join us @ secondlife.com

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Second Life Official: Interviews, Video Tutorials, & Machinima