Start at http://www-03.ibm.com/innovation/us/watson/getting_started.shtml http://www-03.ibm.com/innovation/us/watson/getting_started.s..., which is pretty easy

Start at http://www-03.ibm.com/innovation/us/watson/getting_started.shtml http://www-03.ibm.com/innovation/us/watson/getting_started.s..., which is pretty easy to find from a search for "watson ibm request".