We have posted the download link for the Arena software in the Arena section.  There are also Install Instruction document and Setup Instructions document available on the same page.

We have just posted videos showing download, install and setup for Arena.

We recommend limiting the chess engine playing strength especially for the beginner players.

Please note that option for limiting the chess engine playing strength is not available for all chess engines.  The Rybka chess engine is the most balanced and advanced among the chess engines that come alone with Arena and does have the playing strength control.  When you load and activate the Rybka engine the "Limit Playing Strength to ELO..." option will show up in the "Levels" menu.