Typing Pal  Good Site:  http://www.typingpal.com/Exercises/

http://www.nailitnow.com.au/typingtutor/index.html

Test your speed and accuracy

http://www.learn2type.com/TypingTest

http://www.typingtest.com/

http://www.mrkent.com/kb/kbtest.htm

http://www.universityoflife.com/typingtest.htm