I loved this book! I read an excerpt of her essay "How to Create a Poetic Tradition" online and was hooked. This book contains that essay and many more. "The Body of Poetry" has a premise that will fascinate both genders: that "the poem's body has come to be despised by literary culture." Her short essay (or rather, almost a checklist) "Omniformalism: A Manifesto," is something every poet should read (and probably post above his/her desk). In it, she suggests that every poem should have physicality, permeability, structure, kinship, continuity, and mystery, and explains these beautifully.
As Finch is an accomplished poet, this is some of the most beautiful literary criticism you'll ever read.