Human Use of Signs: Or Elements of Anthroposemiosis Book

Quite a good introduction/summary of critical theory, its main philosophers and how it applies to literary studies. It is still a demanding read but Belsey made a good attempt in explaning what Derrida and Barthes really meant. And while I was reading it, I even thought for a moment, I finally understood it! Of course, later on, I realized it is not really possible to understand them fully as it is an extremely dense material but it clarifies certain points.

If someone is interested in critical theory and literary studies, it helps! It is not the best book I have read on the matter but it is a decent explanation.