How to create a letter head in detail?

How to create a head letter firs you need to put your full name you can put a picture if you want to. Then you put the name of the street your address your email your phone number . And your zip code the city and the state. You put commas between them . between the phone number and the email put shift+8 =* then you put phone then colon you put the number.

why is the computer powerful?

cause you can get anything on the computer or answers.