Shtan is a “sh” sound.

There is no rune poem for Shtan. It is a Northumbrian Rune.

Shtan, the stone, you can say that it “grounds” you, in that contemporary terminology, of taking you from the phrenzied[1] state of mind and soul, to one that is stable, calm and unshakable. It is a foundation, the rock solid support to build upon. As any construction engineer can tell you, a good foundation can protect a buidling, even during natural disasters, that other buildings collapse from, because their foundations were unsteady or made with minimal attention.
In Orion Foxwood’s book “The Tree of Enchantment” he talks about the Stone, a state being where you have worked and achieved, a point of stability, and a foundation, from which now the higher levels and the being who dwell in them are now accessible, which he describes as the stars, or rather the stars above. I think of it, in this sense, as being the mountain peak, beyond the tree line, where it is only rock, wind and sky. From there it seems that direct access to the celestial powers above can be reached, but they also pour forth that holy starfire, into the stone, and the land beneath.