Well, for us the books received is a copy of The Aeneid in English, and a copy in Latin.
The English copy is for us to read so that we understand the plot etc... in order to write essays on it.
The Latin copy is for translation and study of poetic techniques etc...
On the exam, two sections from memory will be concerned with The Aeneid. In one you will be given a chunk of text (in Latin) from some part of the section of Book I we will have studied (it could be more though). You will then be asked a range of questions in English, to which you will respond in English. Questions may be comprehension based, asking about poetic techniques, and other similar questions. You will also have to scan one or two lines (I forget which).
The other section requires you to write an essay about the Aeneid in English.