The book "Open Source ERP" discusses how freely available tools on the web are helping a global community access high-quality business applications. It provides tips on getting help, contributing to the project, and understanding the ADempiere suite. The book is aimed at software developers, system integrators, academics, researchers, students, and DIY enthusiasts interested in open source and ERP. It covers topics like the power of the web, installing applications, functional structures, setting up new shops, materials, business partners, purchase cycles, and sales cycles. The book is a valuable resource for those new to the field of Open Source ERP.