I found the following Maya tutorials after signing up for the bronze account. Click the links to save a copy for yourself.
The following are Microsoft word documents.
Introduction Edge Sub_Object Model of a Nut & Bolt Polygon Sub_Object Vertex Sub_Object
Introduction
Edge Sub_Object
Model of a Nut & Bolt
Polygon Sub_Object
Vertex Sub_Object
The following are PDF documents.
T28_Macro_Relations T48_Shot_Discontinuity T56_Face_Actor_Char
T28_Macro_Relations
T48_Shot_Discontinuity
T56_Face_Actor_Char