Identifying them is often the big challenge. You need to understand what they are.
You need to be able to find the common ones: Metaphor, Simile, ( Try watching this link: https://www.youtube.com/watch?v=uoSBVNUO2LU&ab_channel=TheBazillions )
Lexical choice - where a word is used purposely to create an effect- eg adjectives to add to a description of something or someone.
In the Prose extracts there may be features like statistics, quotations from other people, rhetorical question - where a question is asked that the reader is not expected to answer but it makes them think about what the answer would be, listing.
You could also look at the point of view in the extract.
One of the easier ways to approach the text is to split each into three sections and then try and find one feature in each which helps answer the question, identify it and then give an example and explain how it helps the question.