See also:

Study of Jesus (Christology)

The growth of the church over the past two millenia, plus its roots in Judaism. 

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Church History: from Liberalis  Attractively presented papers on the history of the church.

Christianity: from Wikipedia  "The names 'Christian' and hence 'Christianity'" are first attested in Acts 11:26, 'For a whole year they met with the church and taught a great many people. And in Antioch Jesus' disciples were first called Christians' (Gr. ???st?a????, from Christ Gr. ???st??, which means 'the anointed')."

Christian Tradition:  from Virtual Religion including the Early church, Eastern and Medieval Latin traditions, the Protestant Reformation, Roman Catholic reforms,  and modern Christianity