Houghton Mifflin Harcourt
Harcourt: Biographies: Johannes Gutenberg
This brief account of Gutenberg's life is an excellent resource. Additional links to photographs of his equipment and works are available also.
Other
The Second Millenia: Gutenberg: 1455 Printed Matters
This website discusses the life and times of Johann Gutenberg and the first printed Bible, also known as the "42 line Bible." It mentions printing techniques.