Excellent 45 minute video going over many great tips and tricks for Maya users.
tutorial
Alembic Pipeline Workflow /
Alembic pipeline workflows from Realflow 2014 to Maya using Vray's Proxy import system.
Simply Maya - hard surface modelling techniques /
Great free tutorial looking at some hard surface modelling techniques in Maya.
Webinar: Maya 2015 modelling workflow /
Excellent in depth tutorial for Maya 3D modelling workflow using the new modelling toolkit features.
Nuke > Mari bridge tutorial /
This tutorial is old but everything still applies for the Nuke MARI bridge Excellent way to patch matte paintings.