Develop BASIC interpreter for microcomputers. Use that as an initial product for a software company and make lots of money
Bill is a shortened familiar version in English for William. Just a nickname. His actual name is William Henry Gates III.
His last name is Gates, because Gates is his family's name. His last name Gates comes from his ancestors.
To control the distribution of the money they are giving away. Some people feel that when you have a large amount of money they should try to help others with it, so they started the foundation to...
Right now because of the widespread use of computers and the Internet his target is most people in industrialized countries.