First navigate into your Eclipse Workspace folder from the command line.
Then type git clone https://git-teaching.cs.bham.ac.uk/mod-team-proj-2016/c3.git.
Open up Eclipse and click on File->New->Java Project.... Type in c3 for the project name and press Finish.
Go to Window->Preferences, then navigate to Java->Build Path->User Libraries. Press Import.... Click Browse... and navigate to the project location. Then double click on libs.userlibraries, and press Ok, and Ok again.
Finally! Everything should be imported and setup correctly.