Some worthwhile books. Feel free to contact us for suggestions to add some more!
1) Ancient Fire – Segomâros Widugeni. The accumulated works of the founder of Toutâ Galation. One of the most complete attempts to explore the Gaulish devotional practices and the revival movement.
2) Celtic Heritage – Alwyn and Brinley Rees. General Celtic.
3) Dictionnaire de la Langue Gauloise – Xavier Delmarre. Essential for Gaulish language study.
4) Etymological Dictionary of Proto-Celtic – Ranko Matasovic. Also essential for Gaulish langauage.
5) La Langue Gauloise – Pierre-Yves Lambert. Very good for Gaulish grammar.
6) How to Kill a Dragon: Aspects of Indo-European Poetics – Calvert Watkins. Indo-European studies. Good for poetic formulae, meters, and anything to do with dragon-slayer myths.
7) Deep Ancestors: Practicing the Religion of the Proto-Indo-Europeans – Ceisiwr Serith. Indo-European studies, but very good.
8) The Gods of the Celts and Indo-Europeans – Garrett Olmsted. Indispensible, but must be used with *great* caution. Don’t take Olmsted’s myths at face value, but his list of deities and where they are attested is wonderful.
9) The Celtic Gauls: Gods, Rites, and Sanctuaries – Jean Louis Brunaux. Original edition in French. Very good for ritual and sanctuaries. Less useful on the Gods.
10) Lady with a Mead Cup: Ritual Prophecy ahd Lordship in the European Warband from LaTene to the Viking Age – Michael J. Enright. Excellent for sovereignty, prophecy, and warband culture.
11) European Paganism: the Realities of Cult from Antiquity to the Middle Ages – Ken Dowden. General ancient Paganism.
12) Death, War, and Sacrifice: Studies in Ideology and Practice – Bruce Lincoln. Indo-European studies, but useful for the journey to the Otherworld and for creation by dismemberment.
13) The Apple Branch: a Path ot Celtic Ritual – Alexei Kondratiev. General Celtic, but very good for Gauls.
14) The Gods of the Celts – Miranda Green. Good but some cautions. The wheel, for example, not a solar symbol.
15) The Celts – edited by Venceslas Kruta et. al. General Celtic, but a lot of Gaulish and other Continental Celtic archaeology.
16) Oxford Dictionary of Celtic Mythology – James Mackillop. General Celtic reference work.
17) Altkeltische Sozialstrukturen – Raimund Karl. The essential, and exhaustive, work on old Celtic social structures and institutions. Really incredible research. And available online, here: http://homepage.univie.ac.at/raimund.karl/Sozialstrukturen.pdf
18) A Brief History of the Celts – Peter Berresford Ellis. Archaeology, history, religion and mythology.
19) Celtic Mythology and Religion – MacBain. Now very old, originally published in 1885. Not the easiest or most entertaining read, and gives few definite answers. Fouses equally on Continental and Insular Celtic.
20) The Mammoth Book of Celtic Myths and Legends – Peter Berresford Ellis. An attempt to retell Insular Celtic myths and legends as they migth have been before Christianisation.