This is an example, right at the beginning of the poem.
It's a little bit of an exaggeration and for dramatic effect by asking for a hand that is so invincible to contain the fearfulness of the tiger or an invincible eye to be able to look and frame it without being frightened.
Well it’s text to self and text to news. Considering he’s reading about a 1904 earthquake. That’s news. Since he’s reading it to himself however, that’s self