The imagery used in Psalm 90 includes comparisons such as God as a shelter and refuge, humans as grass that withers and fades, a flood sweeping people away like sleep, and God's anger being compared to a consuming fire. The imagery in the psalm reflects themes of mortality, human frailty, and the eternal nature of God.
Psalm 90 is said to be written by Moses and the oldest psalm of the Bible.
Psalm 90.
Moses interceding for Israel in song form
Yes and no. Yes, no name is given. And no, because tradition states that this Psalm (and certain others) was originally spoken by Moses (Rashi commentary, on Psalm 90:1, referring also to Psalm 100).
Lord you have been our dwelling place for all generations
psalm 90
Psalm 23 is sometimes used in weddings. It is a Psalm of trust in God as you progress through whatever lies ahead, and so is quite suitable on such an occasion.
Psalm 90:10
It isn't known but it may have been in the area near Mt Nebo.
Psalm 90:10 in King James Version
Some commonly used types include relaxation imagery, healing imagery, pain control imagery, and mental rehearsal.
Psalm 90 is the only one we know for sure.