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http://www.raspbmc.com/
Check out the forums for help
http://forum.stmlabs.com/

PDF Downloads
As a Pro member, you will gain access to download any Instructable in the PDF format.
You also have the ability to customize your PDF download.
OpenElec is XBMC on a custom stripped down Linux OS making it significantly faster and easier to install and configure. They have a number of images built to specific hardware (Fusion, Intel, Raspery etc etc) or a generic build.
If your TV set supports CEC you can control XBMC on Raspberry Pi using the TV remote.
From Wikipedia: "Trade names for CEC are Anynet+ (Samsung); Aquos Link (Sharp); BRAVIA Link and BRAVIA Sync (Sony); HDMI-CEC (Hitachi); E-link (AOC); Kuro Link (Pioneer); CE-Link and Regza Link (Toshiba); RIHD (Remote Interactive over HDMI) (Onkyo); RuncoLink (Runco International); SimpLink (LG); HDAVI Control, EZ-Sync, VIERA Link (Panasonic); EasyLink (Philips); and NetCommand for HDMI (Mitsubishi)