The following will be your primary resource for getting up and running:
The original design and studies that were done can be found at Scientific papers from the Coda project
We have a few manuals - these have details for programmers and advanced system administration, but are less well organised than the coda-howto:
Papers are being written about the implementation:
The easiest way to get manuals, and internals documentation is to download the whole package from our documentation ftp site