PDFs
Core Resources
Sites
The original work by LawfulNice @ LawfulNice's Blog
The official website/forum @ White Wizards Workshop
PDFs
Dungeons the Dragoning 40,000 7th edition v1.6
Dungeons the Dragoning 40,000 7th edition Book 2: For a Few Subtitles More v2.2
Homebrew
Telok's PDFs and tools
The rework A total homebrew authored by Telok1. The only real benefit is that the changes are in the PDFs and there are hyperlinks, dice rollers, charts, and other tools included in the PDF files now. But the notes and the rollers require a full function PDF reader that can do annotation and form filling. Plus a totally alpha/test Andriod smartphone/tablet app.
Giant in the Playground forum Lets Read thrread
White Wizards Workshop forum Homebrew thread