a16z Podcast: The Next Phase of 3D Printing by Tom Rikert and Carine Carmy design ecommerce 3D printing design e-commerce
Why Amazon Has No Profits (And Why It Works) by Benedict Evans ecommerce growth #longreads e-commerce retail trends 2014
a16z Podcast: Building Brands and Running Retail by Tristan Walker ecommerce brand & branding e-commerce founder/maker stories retail