Just a note on the XNA Pong game in Chapter 2, the book makes no mention of this but the downloaded code for the chapter has some slight changes to the XnaPong constructor. The last two lines in my code below need to be added for your ball to actually move.
graphics = new GraphicsDeviceManager(this);
Content.RootDirectory = "Content";
// Don't limit the framerate to the vertical retrace
graphics.SynchronizeWithVerticalRetrace = false;
this.IsFixedTimeStep = false;