There have been various attempts over the years to create a true BIM portal, with links to all relevant documentation.  Have you checked out CODEBIM?  The reports page is pretty impressive list of BIM documents …

Heads-up:

There is apparently over “20000 pages of documentation” that will be released, along with videos and 3D asset files.

It could be interesting to see how this release intersects with the development of Revit standards and Revit content globally…

The Autodesk Creative Commons “Area”:
AREA | creativecommons

“The group adopted the Creative Commons licensing which means 20,000 pages of documentation, 70 videos and 140 downloadable 3D asset files are now ready to be modified, remixed and shared globally.”

via / heads-up:
Autodesk makes huge trove of docs, training materials and 3D asset files available under Creative Commons – Boing Boing

As per the above Autodesk page, “More content to come soon…”