I'm happy to help you learn more about figurative language by helping you analyze examples of it in a given text!
Figurative language involves figures of speech and imagery. Examples include metaphors, similes, hyperbole, idioms, allusions, and personification. Authors use figurative language in order to evoke certain emotions from readers.
Let's look at the following quote from chapter 3 of Kaffir Boy, by Mark Mathabane:
With stars in my eyes I grabbed the edges of the crate and tried to rise, but I couldn't; my knees had turned to Jello-O, my eyes were cloudy and my head pounded as if it were being split with an axe.
Mathabane paints a picture for the reader when describing the police squad invading his house. "My knees had turned to Jell-O" is an example of a metaphor, because his knees are not actually Jell-O: he just uses this as a comparison so we can imagine how wobbly his knees feel.
Similes and metaphors are both used to make comparisons, but similes use "like" or "as" in the comparison. For example, look at the simile used in chapter 6:
I would be out playing when suddenly my head would feel light, my knees would wobbles, my vision would dim and blur and down I would come like a log.
Mathabane describes his fainting spells (as a result of starvation) by comparing his falling body to a heavy log.
Mathabane's figurative language allows us to feel his fear, despair, and hunger. Take a look at this quote from chapter 10:
At times it was the silent destroyer, creeping in unseen, unrecognized, except when, like a powerful time bomb, it would explode inside my guts. At other times it took the form of a dark, fanged beast, and hovered constantly over my dizzy head, as if about to pounce on me and gouge my guts out with its monstrous talons.
The personification of Mathabane's hunger helps us understand his feelings and what he's going through.