To use Git from Visual Studio, you have the following options
The Visual Studio Tools for Git is an extension for Team Explorer that provides source control integration for Git. This extension enables integration with any local Git repository, and it provides tools to work with third party hosted Git repositories. The extension also enables the use of Team Foundation Service hosted Git projects.
Git Extensions is the only graphical user interface for Git that allows you control Git without using the commandline. It comes with a manual and video tutorials to get you started quickly.
Git Source Control Provider is a Visual Studio extension that integrates Git with Visual Studio.