Other
The Aria Database
The searchable Aria Database features over 1,200 arias from 170 operas by 60 composers. It includes lyrics, translations, synopses of operas, and MIDI files.
PBS
Wnet (New York): Opera Primer
Get to know more about opera with this well written website. Many people unfamiliar with opera can be intimidated by it or even think it is boring. This site will show you just what an opera is and maybe even convince to become a fan.