You can't Google your way to a Recommender System 

How do recommender systems improve customer experiences? What goes into building one from scratch? Schaun Wheeler and DJ Rich answer these questions and more in an insightful conversation hosted by Arpit Choudhury.
CHAPTERS:
00:00 Building a recommender system
05:20 Components
09:58 The Learner
12:51 For start-ups
20:36 Personal experience
23:49 Innovations