This book focuses on various types of crowdfunding and the lessons learned from academic research. Crowdfunding, a new and important source of financing for entrepreneurs, fills a funding gap that was traditionally difficult to close. Chapters from expert contributors define and carefully evaluate the various market segments: donation-based and reward-based crowdfunding, crowdinvesting and crowdlending. They further provide an assessment of startups, market structure, as well as backers and investors for each segment. Attention is given to the theoretical and empirical findings from the recent economics and finance literature. Furthermore, the authors evaluate relevant regulatory efforts in several jurisdictions. This book will appeal to finance, entrepreneurship and legal scholars as well as entrepreneurs and platform operators.