Anglo-Saxon poetry depends heavily on internal rhyme. The introduction to Grendel on p. 42 includes several lines with the sound "all" including the words "call," "hall," "all," and "Almighty." The most unique poetic device is the kenning, a compound metaphor that provides an instant image, such as "whale-road" for sea. In the first lines of p. 42, "hell-forged hands" gives us an instant image of Grendel as being made for evil, a killing machine.
The introduction to Beowulf, the hero, comes on p. 45-47, where Beowulf arrives and asks Wulfgar to lead him to the Danish King. Wulfgar asks Beowulf and his 30 men to leave their spears and shields behind. They are decked in chain mail, carrying their swords, and Beowulf tells Hrothgar he wants to fight Grendel. He says his men know his quality and how he has rid the world of giants and sea monsters. He vows he will fight Grendel with no weapon but his hands. Oddly Grendel is a giant troll, and Beowulf feels obligated to kill "the last of the giants of the earth." At the same time, Grendel is the only one of his kind, without companionship or fellowship. In John Gardner's Grendel, we see the monster as obscene.
There are several translations of Beowulf. Two of the best are the Grummere and the Heaney, neither of which are in your textbook. The Grummere is available on archive.org.