Write down the lyrics. Many times, if you study the lyrics of a song, the meaning makes itself clear.
Look deeper for meaning. Many artists use literary devices to convey their messages. Analyze the lyrics and play close attention to incidences of alliteration, metaphor and simile.
Read the artist's biography. If you know more about the artist and their background, you can better interpret the meanings of their songs. For example, many people assume that "Cry Me a River" by Justin Timberlake tells the story his breakup with Britney Spears.
Use the Internet to research the meanings of songs. On the website Song Meanings, many songs are listed within the extensive library. After the printed lyrics, the site offers several interpretations of the song's meaning.
Go to a lyric discussion forum. If you want to look even further to figure out a song's meaning, discuss the possibilities with other fans on Lyric Interpretations.