A blurb on the back cover begins "In the contentious field of literary criticism, deconstruction - often condemned as impenetrable, self-indulgent, mechanical, or nihilistic..." Alas, this book does little to change that perception and a lot to support it.
Divided into three sections or long chapters, the third is the clearest (least unclear) and most penetrable. The first two chapters suffer from many problems, and for the most part make you feel like you're coming late to a conversation that started years and books ago. At no point I can recall does the author offer a definition or starting point for deconstruction. These two chapters read like an endless string of pronouncements, without supporting information or discussion. Culler worsens "the read" by an almost complete lack of examples or basis for his declarations, and frequent use of obscure terminology.
The third chapter is a good deal more digestible and manages to discuss deconstruction with reference to examples, notably Melville's "Billy Budd" and a poem by Thoreau. Despite this, I could not tell whether and where Culler actually believes this stuff -- largely Derrida and de Man's writings. It certainly seems clear that their declarations that no text is readable leaves open the question of whether there is any practical use or value to deconstruction. The style throughout the book is rambling, and if Culler ever made it to a thesis, it eluded this reader.