SECONDLIFE TIPS & TRICKS
Mesh models enable more detailed, complex, realistic, and creative objects and avatars. Designers can use external software tools to design avatars and other content for use inworld.
Second Life has the ability to import 3D models (meshes) created in popular tools such as Maya, 3DS Max, Blender, and so on.
SL Mesh FAQ
Mesh Background Information
The Kettle Questseries of tutorials for Sculpted Prim creators, who want to know how to make optimal meshes.
SL Mesh Tutorial Quiz