Test your voice. Soprano and alto female voices are needed in most choirs, in addition to male bass and tenor voices. Occasionally, a baritone may be used in some choirs.
Find a choir. Choirs can be affiliated with a church, school, organization, employer or a type of music, like a jazz or symphonic choir. Take your singing skills and the choir's practice and performance schedule into consideration. Some choirs practice regularly. Others are informal and meet less often.
Learn to sight read. Choir members need to read music to accurately sing and practice their parts. Many choral lyrics are written in languages other than English, so proper pronunciation and a cursory knowledge of French, German, Latin or another language may be required.
Sing in tune. With so many voices intermingling, it's important that each member stay on pitch. Listen closely to the other singers and adjust if they waver slightly out of tune. Choir singing is a group effort and a showcase for individual voices.
Follow the other singers and the choirmaster. You need to take directions easily and blend in with the other singers. Monitor your voice so it doesn't become too loud and interfere with the choir's sound as a whole.