Poetry might be defined, initially, as a kind of language that says more and says it more intensely than does ordinary language. Poetry is the most condensed and concentrated form of literature, saying most in the fewest number of words. Read a poem more than once. Keep a dictionary by you and use it. Read so as to hear the sounds of the words in your mind.
Every word is therefore important.
Always pay careful attention to what the poem is saying. It acquires these connotations by its past history and associations, by the way and the circumstances in which it has been used. Imagery may be defined as the representation through language of sense experience. The word image perhaps most often suggests a mental picture, something seen in the mind's eye - and visual imagery is the most frequently occurring kind of imagery in poetry. Broadly defined, a figure of speech is any of saying something other than the ordinary way, and some rhetoricians have classified as many as 250 separate figures.