Justin Bieber went from runner up in a talent contest in his small hometown of Stratford, Ontario, to a worldwide teen superstar, thanks to the Internet site, YouTube. Growing up, his mother bought him different musical instruments but could not afford lessons too. So Justin taught himself how to play. When singers Usher and Justin Timberlake took an interest in him, "Bieber fever" took off! Now he has platinum albums and sells out stadiums, performing for tens of thousands of screaming fans at a time.