When working on a poem, it can be helpful to print and analyze it for striking elements such as repetitions and rhyme words. Making notes in the margins can aid in understanding the poem's development and adding personal insights.
If you are working on a poem, it can be a good idea to print it, maybe even enlarge it, and then write anything you find particularly striking in the margins. Use highlighters or coloured pens to underline repetitions and link rhyme words. Patterns may well emerge that will help you understand the way the poem develops.
Make the poems your own in this way, and then, if you are the kind of person who doesn't mind writing in books, you can insert notes in a more restrained way in the margins of your book.