Thank you!
Yes, I have plans for all of the Elder Futhark runes except for Eihwaz, which was missing from the rune set I found. I’m sure I could pretty easily make it out of the included blank, though.
Some runes will let you meddle with people, others will let you help them. Some will open up paths that were (will be, I guess) blocked, etc. Some of them just turn on basic abilities, like you need the “Wealth” rune (Fehu) to have a wallet and the “Property” rune to have an inventory.