Customize Site Actions and Ribbons

Great Article from Heather Soloman on the basics
https://www.nothingbutsharepoint.com/sites/eusp/Pages/Boil-it-down-to-the-basics-the-SharePoint-2010-Ribbon.aspx

 Hide Site Actions and Ribbons from all users other than Site owners and Site Collection Admin.
http://www.linkedin.com/redirect?url=http%3A%2F%2Fblogs%2Emsdn%2Ecom%2Fb%2Fzwsong%2Farchive%2F2010%2F04%2F29%2Fhow-to-hide-ribbon-from-users-without-edit-page-privilege%2Easpx&urlhash=Mcg5&_t=tracking_disc

However, in some cases site contributors need the ribbon so we decided to hide it by default then show it when necessary.
http://www.linkedin.com/redirect?url=http%3A%2F%2Fblog%2Econcurrency%2Ecom%2Fsharepoint%2Fhide-sharepoint-ribbon%2F&urlhash=NmwF&_t=tracking_disc

Sharepoint scrolling
 http://kyleschaeffer.com/sharepoint/sharepoint-2010-scrolling/

Customizing Ribbon
http://sharepoint.microsoft.com/blog/Pages/BlogPost.aspx?pID=426

http://geekswithblogs.net/venkatx5/archive/2010/11/17/how-to-hide-top-bar-ribbon-quick-launch-in-sharepoint.aspx