This document provides an overview of the top 10 things new users need to know about Microsoft Dynamics NAV. It discusses NAV's history and architecture, including its multi-tenant database structure and support for Windows, web and mobile clients. The document also covers key NAV functionality like purchasing, sales, HR/payroll and project tracking. It introduces the Sparkrock Foundation which extends NAV and provides tips on basic navigation and use of role centers. Resources for learning more about NAV are also listed.