This past year I started listening to Side Hustle School which is all about finding a new source of income without quitting your day job. I love this podcast. Try it for yourself:
Side Hustle School Podcast
Chris Guillebeau now has a book out as well to help you succeed. I love his philosophy and ideas from real people out there doing just what he's talking about. Here's his book. Go to Amazon and order yours:
Side Hustle From Idea to Income in 27 Days