The hero Aeneas was already known to Greco-Roman legend and myth, having been a character in the Iliad, composed in the 8th century BC. Virgil took the disconnected tales of Aeneas' wanderings, his vague association with the foundation of Rome and a personage of no fixed characteristics other than a scrupulous piety, and fashioned this into a compelling founding myth or nationalist epic that at once tied Rome to the legends of Troy
A school text-book, but at an advanced level, so that it does not explain absolutely every aspect of the grammar. To a beginner in Latin poetry, it is a useful guide to poetic license. For poetic Latin is different from prose in the sense of word order and the varying images that the poets invoke.
Virgil writes about the early history of the city of Rome as an elaborate interplay of human fortune and the intervention of the gods in the fashioning of this history. I must say that I couldn't quite do without the short introductions to the passages here, or the detailed notes on the left hand page side.
I do strongly recommend the series of books of which this one is a part. I'm sorry to not finish this book; I only managed the first of the two parts and must return it for lack of time. The Latin is difficult indeed, but at some point it becomes necessary to move away from the Latin primers and, dictionary at hand, in mare salire.