This is an excellent overview on North Myths and Legends, covering not only the gods and giants but the family/hero sagas as well. The emphasis is on overview, as the author covers quite a bit of ground; reviewing the myths and stories themselves, then moving on to the art and philosophies that have been developed out of them.
This is quite a great deal of information, and not everyone may have the patience to read through it all. But I would encourage readers to stick with it, as you will (as I did) find out how much you didn't know, and discover areas you might want to pursue further. I found the section on Wagner's Ring operas to be particularly edifying. And she has lots of interesting things to say on modern versions of the Norse Myths, such as Tolkien's "The Lord of the Rings" trilogy and Neil Gaiman's "American Gods."
There is a small, but helpful bibliography, which should help guide readers, should they want to read further. I, for one, plan on going to the source and read Snorri's Prose Edda.