Does Asatru involve ancestor worship?
Asatru says we should honor our ancestors. It also says we are bonded to those ancestors in a special way. One of the implications of this relationship is that the ancestors need our veneration, and that they reciprocate by looking out for us from beyond death.
We also believe our forebears have passed to us certain spiritual qualities just as surely as they have given us various physical traits. They live on in us. The family or clan is above and beyond the limits of time, space, and mortality.

Does Asatru have a holy book, like the Bible?
No. There are written sources that are useful to us because they contain much of our sacred lore in the form of myths and examples of right conduct, but we do not accept them as infallible or inspired documents. Any religion holding such beliefs of infallibility is deceived about the purity and precision of the written word.
There are two real sources of holy truth, and neither expresses itself to us in words. One is the universe around us, which is a manifestation of the underlying divine essence. The other is the universe inside us, passed down from our ancestors as instinct, emotion, innate predispositions, and perhaps even racial memory. By combining these sources of internal and external wisdom with the literature left us by our ancestors, we arrive at religious truths. This living spiritual guidance is better than any dusty, dogmatic “holy book”.