Make sure that you read the poem at least three times to grasp the overall content and key themes present. By reading the poem this number of times you will improve your confidence with it and pick up on different aspects per read. Next, look at the title of the poem as this can be useful in informing you of any context or general themes of the poem. For instance, some titles might suggest there to be historical context in the poem, or perhaps themes of love like one of John Donne's poem which is named 'Love's Growth'; a clear indication that the poem is about love. However some poems might have more abstract titles so the style of the poem might be a more helpful starting point in grasping the mood of the poem- e.g. whether it is a sonnet, epic poem, or lyrical poem. The speaker's voice is equally important and you should look for what person it is written in, whereby the use of first person can be realized by personal pronouns. Once you have grasped the overall idea of the poem begin to delve deeper by highlighting key words and any literary devices used, such as alliteration and repetition for instance. The analysis of single words is important as it demonstrates your ability to narrow your focus on smaller details, contributing to your overall understanding of the poem. Another important feature to look at is the rhyming scheme and how this may influence your interpretation of the poem, while also noticing any use of enjambement and structural devices which affect the flow of the poem. As you work your way through your analysis you will find that the poem will become easier to comprehend and an argument will come to you naturally as you answer the exam question. Just remember to work through the poem methodically and in an organised manner!