I see in all the pictures posted on almost every web site people growing in large tupperware containers. After all the serching I've done, I've only been able to come up with suggestions on how to cultivate in canning jar quantities. Does anyone know the methods of how to go about increasing the yield size of a crop?
What you mean is called casing:
Shroomery Casing Section (http://www.shroomery.org/casing)
You need to know the basics though first, casing is the next step.