The Fool is a very powerful card in the Tarot deck, usually representing a new beginning -- and, consequently, an end to something in your old life. The Fool's position in your spread reveals which aspects of your life may be subject to change. The Fool signals important decisions ahead which may not be easy to make, and could involve an element of risk for you. Approach the changes with optimism and care to gain the most positive outcome.
To get the full traditional meaning and interpreation of The Fool, I suggest you visit Trusted Tarot and their The Fool page.