I have just installed ISE in my lab environment to test things out and the installation is pretty straight forward. Mount the iso in the VMWare ESXi datastore and run it for around 45 mins. A post-installation wizard for information like IP address, hostname, etc. A default admin user is created during the wizard, however it is NOT the same as the web admin username and password. To access ISE:
The default web admin username and password is admin/cisco. You are prompted to change it after your first successful logon.
Haven't started configure anything yet, will post anything that found interesting. :)