Well, the answer depends to some degree on the kind of co-founder you're looking for, but I'd strongly suggest starting with LinkedIn and looking for people wit

Well, the answer depends to some degree on the kind of co-founder you're looking for, but I'd strongly suggest starting with LinkedIn and looking for people with previous startup experience, particularly in your area. Previous startup experience is the best predictor of success, even if their previous ventures failed (though it's always good to know why.) Also, make sure you get people who can think and communicate clearly - this is important even (or as often, especially) for the tech leaders. I get a few people a year approaching me for IoT startups - I'll almost always meet with them and point them to someone who might be able to help them if I'm not the guy. (I'm not interested in raw startups anymore - I've got plenty of great product ideas of my own if I've got to go flog funding...)