If you are a beginner in English literary studies (like me), in trying to wrap your head around the idea of metre and feet, I would recommend you to start from the 18- and 19- century poetry. Poets from those periods did these things in a more regular manner so it is easier to practice along the way. Also, W.B.Yeats would rather die than write free verse and he wrote succinctly and beautifully, therefore, his collected poems is a good exercise book!