Where to start with the Ancient Myths

• Hesiod's Theogony
• Pindar's Odes
• Apollodorus' Library of Greek Myths
• Eratosthenes' Constellation Myths
• Ovid's Metamorphosis
• Ovid's Fasti

Classical Mythology and Lore

• Jason & the Golden Fleece
• The Odyssey (Oxford World Classics, Emily Wilson, Richmond Lattimore
• The Library of Greek Mythology
• The Satyricon
• Daphnis and Chloe
• Leucippe and Clitophon
• The Art of Love
• The Nature of Things
• Sappho's Collected Poems
• Theocritus' Idylls
• Penguin's Legends from the North series
• Elder Edda
• The Saga of Volsungs
• Beowolf
• Sir Gawain and the Green Knight
• The Wanderer, Elegies, Epics, Riddles
• The Greek Myths by Robert Graves
• The Nature of The Universe

Retellings

• Circe
• Silence of the Girls
• The Penelopiad
• Weight (Jeannete Winterson)
• Girl meets Boy
• The Canongate Myths series
• Circe
• Here, the World Entire
• Hold Your Own
• Gender Swapped Fairy Tales (published by Fable&Fable)
• The Sleeper and the Spindle
• Snow & Rose (Emily Winfield Martin)

Where to start reading Folktales

• Jack Zipes' Grimm Fairy Tales
• Gossip from the Forest
• Around the World in 80 Trees
• Entangled Life
• The Fabled Coast

Folklore and Folktale collections

• Penguin Classics:
• The Complete Collection of George MacDonald
• Scottish Folk and Fairy Tales from Burns to Buchen
• Russian Magic Tales from Pushkin to Platanov
• The Turnip Princess
• The Tale of Tales
• A Celtic Miscellany
• Strange Tales from a Chinese Studio
• The History Press Folk Tales Collection:
• Botanical Folk Tales of Britain and Ireland
• Woodland Folk Tales of Britain and Ireland
• Animal Folk Tales of Britain and Ireland
• Queer Folk Tales
• The Anthology of Scottish Folktales
• The Anthology of Irish Folktales
• The Anthology of English Folktales
• Oxford World Classics:
• Victorian Fairy Tales (Oxford World)
• The Mabinogion (Oxford World Classics)
• Hans Christian Anderson's Fairy Tales
• Aesop's Fables (Oxford World classics)
• Chronicle Books:
• Celtic Tales: Fairy Tales and Stories of Enchantment from Ireland, Scotland, Brittany, and Wales
• Tales of Japan, Traditional Stories of Monsters and Magic
• Nordic Tales: Folktales from Norway, Sweden, Finland, Iceland, and Denmark
• Tales of East Africa
• Tales of India: Folk Tales from Bengal, Punjab, and Tamil Nadu
• Monstrous Tales: Stories of Strange Creatures and Fearsome Beasts from around the World
• Ghostly Tales: Spine-Chilling Stories of the Victorian Age
• Sophene Fabula Collection:
• Japanese Tales
• Korean Tales
• Princeton Press' Oddly Modern Fairy Tales
• Japanese Tales of Lafcadio Hearn
• Workers' Tales
• Fairy Tales for the Disillusioned
• The Fourth Pig
• Told Again: Old Tales Told Again
• The Castle of Truth and Other Revolutionary Tales
• Smack-Bam, or The Art of Governing Men
• Simon & Schuter: The Myths, Legends, and Lore
• Mermaids
• Fairies
• Dragons
• Angels
• Other Publishers:
• The Fairy Tale Review
• East Lothian Folk Tales for Children
• Italian Folktales by Italo Calvino
• The Fairy Tales of Hermann Hesse
• Neil Gaiman's Norse Mythology
• The Virago Book of Witches
• Angela Carter's Book of Fairy Tales
• The Folk Tales of Scotland (Norah and William Montogomere)
• Chinese Fairy Tales and Legends (published by Bloomsbury)
• Icelandic Folk Legends
• The Little Book of Hidden People
• The Classic Fairy tales (Norton Critical Edition)
• Philip Pullman's The Grimm Tales
• In Ghostly Japan
• Faery Tales by Carol Ann Duffy
• The Story of Hong Gildong
• In the Land of Time

Hardbacks with pretty covers

• Animal Folktales of Britain and Ireland
• The Anthology of Scottish Folktales
• A Treasury of British Folklore
• Between Worlds: Folktales from Britain and Ireland
• A Treasury of Irish Fairy and Folktales (Barnes & Noble)
• Mythologica
• Warriors, Witches, Women
• Myths and Legends: An illustrated guide to their origins and meanings
• Taschen East of the Sun West of the Moon
• Mythopedia: An Encyclopedia of Mythical Beasts and Their Magical Tales