The book follows a Blended Learning Approach (Learning through multiple modes: Readers learn theory to understand the concept and reinforce it by practically doing it). The new concepts are introduced using examples of common day to day activities for quick realization spread across topics. For the computer literate who want to leverage the advantage of maintaining multiple versions of files/folders to go back and forth in time with respect to the files content. For developers, administrators, analysts, architects and any others who want to perform a simultaneous, collaborative or work in parallel on the same set of files.