A practical 27-day plan for building a side business to supplement what you earn from your day job. A Side Hustle isn't about making a few extra bucks selling lemonade to your neighbors. Chris Guillebeau has created a step-by-step methodology for imagining, building, and launching side projects that can earn real, serious cash. In my years investing on Shark Tank, I've seen firsthand how side hustles can take off and grow into some major profits. Whether you want to supplement your pay check, or jumpstart a full-fledged business, Guillebeau will show you how to get your hustle going in just 27 days flat.