Simple, really. In the US (and yes, Canada), download the PlayStation Home
theme from the PlayStation Store and you're essentially submitting your application to be an early tester for PlayStation Home's closed beta set to kick off at the end of the month. In Europe, the PlayStation Home beta selects you
. Er, we mean that there's nothing extra for you to do since you've done it already -- SCEE will be selecting (check your eMail) its most active users on the PlayStation Network and PlayStation Store. Easy peasy, lemon squeezy.