For those starting out into Norse myth, I recommend Kevin Crossley-Holland’s The Norse Myths. This is an accessible yet authentic translation of the most well-known of the Norse myths. Before the myths, it explains the basics of the pantheon and the cosmology, which many will find familiar if they watched the Thor movies produced by Marvel.
Like with the Graves book, the myths are organized chronologically from the creation all the way through to Ragnarok. Also like the Graves book, it doesn’t have every myth, but this collection is fairly broad. It focuses solely on the gods rather than including the hero stories (called Sagas in the Norse).
This book is an excellent stepping-stone to more complete sources of Norse myth such as the Prose and Poetic Eddas by Snorri Sturrlson. I highly recommend it for anyone with an interest in Norse mythology.