There are more books on the writing craft and poetry than we could ever list here. Following are a few books from veteran American poets on the craft. All should be readily available via internet sources.
A Poetry Handbook by Mary Oliver
Crossing Unmarked Snow by William Stafford
Handbook of Poetic Forms by Ron Padgett
Equally as important as a book on the craft is a good website. Below are two of the best sites for poets/writers. Both offer reliable and timely information on poetry.
Academy of American Poets has information on forms as well as a huge database of poets and poetry.
Poets and Writers offers publishers, events, weekly prompts and abundant connections to information.