Attached Link: http://www.delaflor.com/carrara_book.html

The files are for backgrounds; there are HDR images and jpegs. Unzip them to a folder of your choice and then load them from the properties tray: select Scene>Background>then HDRI or Map and then navigate to the folder. Carrara 3 differs from Carrara 2 in quite a few respects and although the video would be useful you might consider the new C3 book by Mike de la Flor. HTH Mark