The Practical Guide to building an online marketplace is written by Christobal Gracia and Juho Makkonen. All articles are available in Marketplace Academy and as a book, Lean Marketplace. Article available at:
How to choose the right marketplace business model by Juho MakkonenSources and further reading:

How to discourage people from goin around your payment system, Marketplace Academy

How to set pricing in your marketplace, Marketplace Academy

James Currier: Tactics to solve the chicken-or-egg problem, Marketplace Academy
The Marketplace Academy Podcast is hosted and narrated by Katri Antikainen.Find more content about building a marketplace at www.sharetribe.com/academy/.Looking to build a marketplace of your own? Visit www.sharetribe.com!