This image shows the first page you get after you log in to "Data Integrator Console".

There is a message  displayed on the screen:
"Information
ODI-3276: No valid repository alias is found. Click on management link on top right corner to create one."

 Underneath this information message is a dropdown menu for "Repository" and "Work Repository" is the default value in there.

A "Proceed" button is underneath the drop down menu.