Scene Summaries: Each summary is preceded by an mini-index of its own, for quick review.
Character Reviews: Each page summarizes all appearances of a single character and all mentions of that character by other characters.
Macbeth: Annotated lists of passages that illustrate aspects of Macbeth's character.
Themes and Motifs: Annotated lists of passages particularly relevant to significant themes and motifs.
Word Search: Search the text of Macbeth for any word or words.
Also:
A.C. Bradley Answers Your Teacher's Questions About Macbeth -- Q&A guide to the justly famous Shakespearean Tragedy, published on another part of the Shakespeare Navigators site.
Thomas De Quincey's "On the Knocking at the Gate in Macbeth."
Excerpts from Holinshed's Chronicles, Shakespeare's source.

Falcon Education Link: A Resource for Students and Teachers