1.. Macbeth William Shakespeare: http://resources.mhs.vic.edu.au/macbeth/theplay/acts.html
2. Macbeth at pppst.com: http://shakespeare.pppst.com/macbeth.html
3. The Tragedy of Macbeth: http://shakespeare.mit.edu/macbeth/full.html
4. A Research Guide for students: http://www.aresearchguide.com/macbeth.html
5. One of the many Macbeth films: GOOGLE