The CMS (Compact Muon Solenoid) experiment is one of two large general-purpose particle physics detectors at the LHC (Large Hadron Collider). An international collaboration of nearly 3500 people operates this complex detector whose main goal is to answer the most fundamental questions about our universe. The size and globally diversified nature of the collaboration and the Petabytes/year of data being collected, presents a big challenging task in bringing users up to speed to contribute to the physics analysis. The CMS User Support performs this task by helping users quickly learn about the CMS computing and the needed physics analysis tools. In this presentation we give an overview of its goals, organization and usage of collaborative tools to maintain the software and computing documentation and conduct year around tutorials on several physics tools needed as a pre-requisite for physics. We also talk about the user feedback evaluating its work.