I still own a book that I used for literature in college that I really liked at the time. It contains a lot of poetry and the author uses a very engaging, conversational style throughout the book. I notice in looking at this book that it appears to still get some use and later editions of it have added in writing to the other components, so it might be useful on several fronts. It is:
Literature: An Introduction to Fiction, Poetry, and Drama, X. J. Kennedy
Newer editions, as I mentioned, often contain writing in the title, as well, and the second author: Gioia. Mine is from the late 70's, and is the fourth edition....
Here's one newer edition:
I plan on using this next year, as a sort of "spine," along with reading from poets of the time periods we'll be studying.
Here are some websites I've found that include lesson plans, etc. to help with our poetry studies next year: