To install a copy of vCenter Server 6.0, just go to https://my.vmware.com and request for a trial on VMware vSphere or VMware vSphere with Operations Management https://my.vmware.com/group/vmware/evalcenter?p=vsom#tab_download
After that, you can download vCenter Server 6.0.
The installation of vCenter Server 6.0 is quite easy, please remember to check the requirements such as:
- ESXi host
- ESXi host hardware requirements
- vSphere Client-Integration Plugin 6.0
- A web browser with flash enabled
Cheers,