The first chapter in the link below is free.

Click on the MS word format to the right. The PDF on the left is not working.

The most interesting part of the chapter was about how gravity can travel faster than light.

Think about this for a moment. If the sun exploded right now, we would still see the light for about 8 and a half minutes, because it takes that long for the light to travel to our planet. However, the earth would instantly fly off into space because of the lack of the gravitational force, which no longer exists. So, gravity travels through vast distances, instantaneously. Fascinating, because I've never thought about that concept.

Take the time to read it, or skim through it. It's well worth it.

http://www.thefinaltheory.com/pages/9/index.htm