Terry A. Gray, Mr. William Shakespeare and the Internet: A comprehensive, classified, fairly reliable guide to selected Web-based resources. Including Charles and Mary Lamb, Tales from Shakespeare, and other synopses, etc.
Michael Best, Sites on Shakespeare and the Renaissance: Another very useful, comprehensive, but text-based (thus simple and direct) listing of a large variety of links to Shakespeare sites.
Matty Farrow, The Works of the Bard: A versatile, searchable database of the texts of Shakespeare's plays.
The Complete Works of William Shakespeare: Another searchable database, from MIT.
Harry Rusche, Shakespeare Illustrated: A collection of paintings, prints, and other illustrations of scenes from the plays. A must for when you start work on your own Web-page project.
The Royal Shakespeare Company: The home page of the premiere acting company devoted to performing the works of Shakespeare (as well as those of his contemporaries and later playwrights), based in Stratford-upon-Avon.
Shakespeare's Globe: The home page of the reconstructed theater on Bankside in London.
Finally, try the Shakespeare insult site!