* ChordU
* Ultimate-Guitar
* Songsterr
* Guitar chord books: You can also find acoustic guitar chord books at music stores and online. These books typically include chords for a variety of popular songs, as well as instructions on how to play them.
* Guitar apps: There are also a number of guitar apps that can provide you with acoustic guitar chords for songs. Some popular apps include:
* GuitarTuna
* Yousician
* GarageBand
* Music teachers: If you're taking guitar lessons, your teacher can also help you learn the chords for songs you want to play.