Robbert Ravensbergen is an open source and e-commerce expert from the Netherlands.He started to work with open source solutions in the early days of Joomla!. He started his own company, joomblocks.com, from which he has been serving clients with open source solutions since 2009.His first book about WordPress, Kickstart WordPress, Pearson Education, was released in the Netherlands in 2010. After that, several open source related books on Joomla!, Magento, and again WordPress followed.The second edition of Magento Beginner's Guide is his first international book. Sander Schoneville is a Technical Director at GroupDeal, a Dutch daily deals site based on Magento. His has his background set in media psychology and business informatics.He combines both fields to create effective websites.He has worked with Magento since its early releases in 2008 and has written a Dutch book about Magento.Together with cowriter Robbert Ravensbergen, he's running an e-commerce blog at http://www.boostingecommerce.com.