Hi Juhi,
To action Sander's advice, you need to have the authoring tool installed on a server, or otherwise have a local installation available to other computers on your network. You'll probably need to speak to your IT team about this.
The export feature released in v0.1.5 is intended to enable teams to work both in the authoring tool and standalone in the framework, using the grunt build process. This is notĀ a method by which to transport courses between different installations of the authoring tool (although we are working on that feature as a priority, see our dedicated gitter chat room for more). The way we use this 'developer's export' is to allow our theme developers to work on the styling outside of the tool, while our course designers create the content using the tool. The theme devs can then upload their theme back into the tool when done.
The shared coursesĀ area in the tool (see the button in the dashboard screen) allows you to view courses created by other users of the tool (as we haven't integrated any user management into the tool, I'm assuming you're using one user, and so this won't be useful to you).