The following texts are what I consider to be excellent material on Asatru/Heathenry, for both the newbie and the knowledgeable – without delving into New-Age Authors (Like Edred Thorsson/Stephen Flowers, Diana Paxson etc.) or white-power / fascist (too many to mention) reading.
Start with the smaller texts and then work your way to the more challenging reading.
If there is no link to download the text for free, the ISBN number will be provided.
The most important ones (I think) have been marked with nine stars like such; * * * * * * * * *