To go along with the release of the Fundamentals of Materials and Shading course launching September 1st, this live stream will go over critiques of the exercise submissions and any questions you might have about materials and shader nodes going forward. 

To submit a question, render, or blender scene for review, post it to this topic in the Community: https://cgcookie.com/community/9945-materials-and-shading-q-a-and-scene-help