Additional resources would be offered through the virtual course.
The libraries of the European Documentation Centres (for example, the UNED, Madrid, or Europe-Direct) can provide data and texts needed for your work; as well as the UNED library itself. You can also draw interesting material from the Publications Office of the EU.
In this link you can find a very comprehensive list of books about the European Union, most of them written in Spanish, but also in English.