The Prose Edda was written by Snorri Sturluson of Iceland in the 13th century. We can truly be grateful for his work and the knowledge that he thus has preserved for our generations. It contains fragments from the Poetic Edda, but also poems from works that are now lost to us. Snorri does an impressive job in systematizing the Norse gods and binding the stories together into a larger narrative.
The material was gathered from the Internet Sacred Text Archive. The last chapter, Háttatal is missing as of now. It is sort of a collection of verse forms used in the late Viking age and therefore not very translatable.