Reddit reviews Penguin Book Of Norse Myths: Gods Of The Vikings

I had the same problem. As AsaTJ said if you want a physical copy of the poetic edda (the best resourse there is on norse myth) Amazon has it. I'd also recommend "The Penguin Book of Norse Myths by Kevin Crossley-Holland". It gives a lot of history and references as well as the myths themselves. It's great for getting an idea of the times and context.