What you type to log in. Only you see this.
The only name other players will see (ranking board, races). Please don't use your real name.
Which English do you spell in?
American English is used in the United States. British English is used in the UK, Australia, New Zealand, Ireland, South Africa, India and most other places. Canada mixes the two, so pick whichever your school uses. It sets how words are spelled and the accent of the voice that reads them aloud, and you can change it later.