In any dissertation, the introduction will introduce the major ideas presented overall in each chapter of your dissertation. For example, as an English major, my dissertation argued, overall, that every novel William Styron wrote, in many ways, echoed novels he read by other authors. For example, I analyzed his first novel in the first chapter and how it echoed works by William Faulkner and other authors.
Don Juan has become both a legend and an anit-hero in a work by Lord Byron. Don Juan has been popularized recently by famous actors such as Johnny Depp. In fact, a dissertation about Don Juan could go one of several directions—one could analyze the pop culture figure of Don Juan as womanizer—Such a dissertation might explore how the Don Juan myth and legend has evolved over time—in fact, evolved and meta-morphosed over time, as different actors, writers, and playwrights have given their own spin on Don Juan.
A lot of students balk at the idea of a book-length project. But don’t think of it as a book—think of it as chapters divided into mini-chapters, that are then divided into smaller sections of three to four paragraphs, if needed, with headers.
Headers, which you can see in effect in any sample APA style paper online, help you to organize your essay and allow for shifts in focus, without challenging the author to create those bridges between paragraph without having to write difficult transitions between those paragraphs.
The introduction is the place where you state your major overall thesis about Don Juan. It lies out what you will be saying overall about the figure of Don Juan. If you are going to present the argument above, for example, such an introduction might begin in the following way:
The figure of the libertine womanizer that came to be called Don Juan, first appeared in literature some time about 1630 . . . . Over time, this figure has mutated and become popularized as the figure became a common illustration of the man who moves, casually from one woman to another. In later works, such as ___________, etc…
This might serve as the beginning of your introductory paragraph.
You’ll want to move to your thesis statement and then lay out, I your introduction, what you will be arguing as you examine work after work he appears in.