While "Undoing Gender" is one of Judith Butler's most accessible texts (in that one does not need to have a philosophical companion and an OED on hand to read it), I did find many of the essays to not be as well developed as others she has written. Many of the essays seem to be half-completed, lacking some substance. While I do think that "Undoing Gender" is a good start for someone interested in post-structuralism, I would recommend that one really take the time and effort to read some of her more well thought out books like "Bodies That Matter" or "Gender Trouble" -- which might require additional reading of Derrida, Foucault, Freud and Lacan to really get the fullness of the texts.