Use the options on the Start tab to open and create new drawings, to access your Autodesk Docs projects and recently-used documents and to access learning content.
Click the Start tab 
at the top of the Civil 3D application window to display the Start tab.
- Use the Open and New menus on the left pane of the Start tab to open drawings and to create new drawings.
- Click the New button to start a new drawing using the QNEW command.
- Click the down arrow to display additional options for selecting the template to use and to create a sheet set.
- Click the Open button to display the Select File dialog box. Use this method to open DWG, DWT, DWS and DXF files.
- Click the down arrow to display additional options for opening sheet sets or sample drawings.
- Click the New button to start a new drawing using the QNEW command.
- Click Recent to access recently-used documents that are saved locally or in Autodesk Docs.
- Click Autodesk Docs to access documents in your Autodesk Docs projects.
Note: To see your Autodesk Docs projects, you need to be signed in to Autodesk Account and you might need to perform some set-up tasks. For more information, see How Do I Access Autodesk Collaboration for Civil 3D?.
- Click Learning to access tips and videos.