I already appreciated poetry, but this book a friend who previously didn't realize I wrote (prose but interested in getting back into poetry) helped me get an even deeper appreciation, as it explores different poets works, then after each poet's section challenges you to write a poem taking techniques from one or more of the poems by the poet of the prior section.
https://www.amazon.com/gp/product/B0074FSXKI/ And after that I read this which I also appreciated https://www.amazon.com/gp/product/B003L203TW/