While I was researching sources for an article yesterday, I came across the New England Historic Genealogical Society (NEHGS) Article Archive at http://www.newenglandancestors.org/research/services/8658.asp.
NEHGS is a terrific resource that has a lot to offer members including databases, an academic journal and magazine and research services. They also offer some free items on their website, including their Article Archive.
These educational articles cover lots of different subjects, including church records. Just some of the articles featured include:
Jewish Genealogy Tracing Family Histories by Elinor Spokes
Jewish Genealogical Resources at the New England Historic Genealogical Society by Marie E Daly
New Brunswick Repositories: Archives of the Diocese of Saint John by Peter D. Murphy
Shamrocks Among the Fleurs de Lis: The Hidden Treasures of Drouin’s Acadian French-Catholic Church Records Collection by Peter D. Murphey
Did Your Ancestor Get Religion? by Michael J. Leclerc
NEHGS's Article Archive is a fabulous and free way to learn more about researching your ancestors.