The process for making changes to the website will be through our normal file issue, send in a PR, merge by a committer process at https://github.com/opendatakit/website. The caveat is that @yanokwa and @W_Brunette must both approve review and approve changes before they can go live. Changes that are contentious will require a tie-breaking vote from another member of the PMC.
If you'd like to help with this effort, a number of us will be meeting in #website on the Slack starting tomorrow at 2 pm EDT to help clear up any confusing parts of the site. We'll work asynchronously in that channel until the site is live.
So to summarize, http://staging.opendatakit.org will launch as the ODK website on Tuesday, May 29th at 00:00 UTC (8 pm EDT). If you'd like to help, go to http://slack.opendatakit.org and join the #website channel.