I agree with Waelwulf on the original
rune poems. Unequivocably their meanings are beyond dispute. Other books are modern efforts to unravel the past and some may be colored by agenda or affiliation. While many cite Thorsson (original name Stephen Flowers) as an expert in the field, he has a checkered past IMHO as a founding member of the Church of Satan in the 1960s and I have a hard time reconciling a student of hate (i.e. Satanism) with the purer ideals of the Norse way. In any case, stock with the rune poems that Waelwulf links to. Some may find the rune poems to be terse (they are) and then the need for interpretation comes in. My suggestion? While I have some books on my bookshelf with the word
rune in the title, my ability (such as it is) to work the runes is to know the people of ancient Germania, and that is done by reading books of that culture. To know the people is to lay the foundation of working the runes. IMHO (I am far too opinionated for my own good), I would recommend
The Poetic Edda, the most important book of Norse philosophy and probably a book that puts you in the life of the 10th century Viking, such as
the Sagas of Icelanders, which has as its first story, Egil's Saga, and Egil was one of history's great runemasters (sadly not much history on that subject). Knowledge of the runes would come from knowledge of the people and working the runes slowly, building up a relationship (as it were) with them. You can't just download a knowledge set of runic interpretation, it has to be acquired over time IMHO. But if you want a good primer to get up to speed, I will recommend Melville's
The Book of Runes. Succinct, basic, a good intro to using the runes. But I would recommend only as an intro and not in place of actual experience with the runes, and by no means instead of the rune poems, the Edda and the Sagas if you are serious about the subject.