You probably want to look at the ON Community's page for more documents and resources.

 For the moment, the only useful thing housed here is the ONNV source repository, a.k.a: onnv-gate

 You can pull the source from the ON Mercurial repository here by doing:

hg clone ssh://anon@hg.opensolaris.org/hg/onnv/onnv-gate

 This will create a local 'onnv-gate' repository you can then use.

 You will also need to get the appropriate closed-bins for your build. These are located at nightly-bins and can be retreived with:

wget http://dlc.sun.com/osol/on/downloads/nightly-bins/on-closed-bins-latest.`uname -p`.tar.bz2

 wget(1) has moved from /usr/sfw/bin to /usr/bin in OpenSolaris

 Another interesting place to go is ONNV Build project and an ongoing work to make ONNV build faster.