Fiction Books:
There are LOTS of great science fiction and fantasy books to read (like Lord of the Rings or Dune or the Wheel of Time series). Some examples of fiction books about robots are:

• I, Robot by Isaac Asimov
• 2001: A Space Odyssey by Arthur C. Clarke
• Hitchhiker's Guide to the Galaxy by Doug Adams
• Gateway by Frederick Pohl
• Do Androids Dream of Electric Sheep? by Phillip K. Dick
• Check out the Internet Top 100 SF/Fantasy List

Non-Fiction Books:
Some example books of real life, nuts and bolts robots.

• Robotics edited by Marvin Minsky
• Mobile Robots: Inspiration to Implementation by Joseph L. Jones and Anita Flynn
• The Robot Builder's Bonanza: 99 Inexpensive Robotics Projects by Gordon McComb
• Check out RobotBooks.Com

Short Stories:
There are a gabillion short stories about robots. Run a quick search on Google using the terms "robot short story". Go to the library, check it out and read it. A good short story to read is Runaround, written by Issac Asimov. It contains the "Three Laws of Robotics".