It depends purely on your experience and technical knowledge of installing Java applications. A lot of people have problems grasping the basics; a lot of people sail through the process in a matter of minutes.
The Bitnami stack is great for getting set-up, as is our Amazon EC2 image, as is "sudo apt get install alfresco-community" on Ubuntu 9.04… as are a host of other options - use whatever's easiest for you.
Mike
