Reddit reviews The Seed of Yggdrasill-Deciphering the Hidden Messages in Old Norse Myths - 2nd Edition

You may want to read some literature by Maria Kvilhaug or Ronald Hutton. Both authors have been instrumental in helping me construct a coherent notion of what ancient practices may have looked like and how they would have evolved considering the introduction and spread of Christianity. Specific books to consider would be Triumph of the Moon and Seed of Yggdrasil both are fantastic books from legitimate historians. As far as trying to piece together a pure and historically accurate representation goes though, I wouldn't beat yourself up over the details without considering the proper context. Times have changed and so has our understanding of morality. I feel fairly certain that society today, would generally frown upon the sacrificing of virgins to appease the God's :-)