I enrolled to Apple's beta program as I want to test some software under El Capitan. Therefore, I would like to instal El Capitan in Virtual Box.
Is there a recommended way of doing this? As I understand I have to install Yosemite first and then upgrade to El Capitan beta?
I understand, that I have to convert the .app I download into a bootable image which I can use to install it in a virtual machine - can somebody point me to a reliable (tested) howto how I can do this?