This document provides an overview of crowdfunding. It discusses different forms of crowdfunding including donation-based, reward-based, equity-based, and debt-based crowdfunding. Examples are given of successful crowdfunding campaigns in Sweden. Global crowdfunding has nearly doubled from 2012 to 2013 and continues to grow significantly each year. While still relatively small compared to traditional forms of financing, crowdfunding is becoming a notable new means to fund projects and startups. The challenges and opportunities of crowdfunding are also examined.