weird words, weird meanings. not worth my time.
It's not hard.
Yggdrasil is, literally translated, World-Tree. It is a tree that connects every world. It has to get its food from somewhere, right? So wherever it gets its food is probably magical as well, right? So, Odin goes out in search of where Yggdrasil gets its water, and finds that a frost giant named Mimir has already taken it. Mimir, also looking for power and made intelligent by drinking from the magical spring Yggdrasil feeds from, decides to bargain with Odin. Since he's already super-intelligent, he decides he wants to be super-
aware too, and so he takes Odin's godly eye in exchange for access to his magical spring, so that he can see as well as a god can.
The story of how Odin learned runics is equally as simple. When you sacrifice to something, you get their blessing, right? The better the sacrifice, the better the blessing. Well, Odin decides he's going to sacrifice to
Yggdrasil, since that's basically the strongest living thing in the universe by default. Since Yggdrasil is so powerful, it needs a
very good sacrifice. So, of course, Odin sacrifices
himself. Since a
god is a spectacularly valuable sacrifice, Yggdrasil gives Odin his blessing. Since Odin is a
god, he survives sacrificing himself and manages to take Yggdrasil's blessing without further troubles.
It's all very materialistic and simple, once you get past the names. Even the names are simple, if you know the basics of Old Norse.
Óðinn, for example, translates to "The Furious One", which befits his status as the god of war.