Short answers, pulled from the story.
The reconstructed Proto-Germanic name Wōðanaz translates to lord of frenzy or leader of the possessed, revealing that the god known as Odin was originally defined by a state of ecstatic madness rather than kingly authority.
The earliest clear reference to Odin by name appears on a C-bracteate discovered in Denmark in 2020, dated to the 400s, which bears the inscription He is Odin's man, proving that the god was worshipped by name centuries before the written records of the Prose Edda were compiled.
Odin sacrificed his right eye to the primordial giant Mimir in exchange for a drink from the well of wisdom, a mythic act that transformed him from a warrior into a seeker of hidden knowledge.
In the poem Hávamál, Odin recounts his own self-sacrifice where he hung on a wind-rocked tree for nine nights, wounded by a spear and offered to himself, to learn the runes.
As the god of the dead, Odin receives the einherjar, the slain warriors, into his hall Valhöll, known as the Carrion-hall, where they prepare for the final battle of Ragnarök.
The god's influence extends to the name of the day Wednesday, which derives from Old English Wōdnesdæg, meaning day of Wōden, and this name is found in many Germanic languages, reflecting the god's enduring presence in the cultural consciousness of the Germanic peoples.