The complete text is available for download as a single PDF file in two versions:
A reformatted version (a smaller number of pages – saves trees).
The original dissertation (as submitted, with correct page numbers – good for citing).
You can also download individual chapters. See the table of contents.
If you want a more condensed version, consider those two papers:
“Jeeks: Developers at the Periphery of the Software World”, the Annual Meeting of the American Sociological Association, New York, NY, August 10-17, 2007. (An earlier version of the main argument.)
“Networks of Practice as Actor-Networks: The Case of Brazilian Software Development,” Information, Communication and Society, Volume 12, Issue 4 June 2009 , pages 566 – 583. (A condensed version of the historical discussion expanded in parts of chapters 1.3 and 1.2.)