Read online boeks like: Acts Of Peter
The Acts of Peter
Allogenes
Apocalypse Of Adam
The Apocalypse of James I
The Apocalypse of James II
The Apocalypse Of Paul
The Apocalypse Of Peter
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etc
See also:
http://www.meta-religion.com/World_Religions/Christianity/Other_Books/Nag_Hammadi/nag_hammadi_library.htm