University of Victoria (Canada)
University of Victoria: Internet Shakespeare Editions: "Macbeth"
Some summary and analysis of William Shakespeare's tragedy "Macbeth." It discusses a variety of aspects of the play including witches and the supernatural, Lady Macbeth and power, and Shakespeare's sources.
BBC
Bbc Education Scotland: Bitesize Revision on Macbeth
This "Bitesize Revision" of "Macbeth" provides summary, discussion, and review of the Shakespearean tragedy. Also includes a "Craft of the Writer" section that discusses the use of blank verse, rhyme, dramatic irony, and imagery.
Absolute Shakespeare
Absolute Shakespeare: Macbeth Commentary
Read a complete description of each act, with explanations and explications of important passages.