Dear Sir or Madam,I am writing to you about volunteering at the library .I 'm interested in computers and teaching.And I want to volunteer as a computer teacher for people who lack computer skills.I like to help people to enjoy computers as much as I do,so I think I'd be good at this job.I want to help out as a volunteer at your library because I know that many people go there to use your computers.I;mfree to help on weekends and sometimes in the evenings.Yours truly Lisa