Tennis Quizzes - www.tennis4you.com (go to tennis links, quizzes for questions) - Quiz #002 and Quiz #006 are two great quizzes (answers are also available)
The Topspin Slice Serve Check out the following link: http://video.about.com/tennis/How-to-Hit-a-Topspin-Slice-Serve.htm Eastern Backhand Grip or Continental Grip is Best Brush Ball at 1:30 or 2 o'clock Why the Topspin Slice - it causes the ball to drop giving one a larger margin of error - great for second serve when you gotta get it in
6 Steps to a Perfect Two-Handed Backhand - Tennis Magazine July/August Issue - pages 38 - 41 - CHECK IT OUT
Great Tennis Apps with Tips On itunes: The Tennis App Tennis Tips for the iPad