If you missed the announcement, here is the link to the new Virtual Machine that is now available on OTN. Please refer to the “Setup Instructions” on how to download Oracle VM VirtualBox, download the bits, and start the VM.
This VM consists of a sample that highlights an intranet site (“AviTrust Employee Portal”) built using Spaces. Once your VM is up, go to http://host:port/webcenter/spaces/avitrust, log in, and check out the various customizations including new page template (using flyout menus), skin, and custom language taskflow. There are some nice patterns on how you can model a portal site with collaboration features using WebCenter Spaces.
ps: Post your questions to this forum if you have any issues.