Capitalization

1. to begin a sentence.
    example           This is the first day of the rest of your life.
2.to begin the names of days of a week and months of a year.
  example          Monday          Wednesday        Friday
3. to begin a particular name of a person,place or thing,and other proper nouns.
   example          Raquel                  South Korea
                           a sony camera     
4. in writing the pronoun I.