Hi ShellyPineda21,
Welcome to the Support Communities!
The article below may be able to help you with this.
Click on the link to see more details and screenshots.
Playing and managing content in iTunes
http://support.apple.com/kb/HT1399#3
Editing Info
Each audio or video file in iTunes has several settings and tags that can be easily modified. These options can be accessed by selecting any file in the iTunes browser windows and selecting "Get Info" from the File menu. You can add song lyrics, artwork and set special playback options. The "Info" tab lets you edit information about the file including artist and album info.
Cheers,
- Judy