VMware releases two kinds of patch packages: One large "Full Patch" (FP) and a smaller package with security and third party updates only (TP):
You can just use the full patch ISO to update from any 6.0 release/patch level and be done with it. Details on how to install it are in the update release notes and the documentation here:
VMware KB: Update for VMware vCenter Server Appliance 6.0 Update 1
Stage Patches to the vCenter Server Appliance
Install vCenter Server Appliance Patches
You can also patch the appliance automatically through the management web interface if your appliance has internet access:
Patching the vCenter Server Appliance by Using the Appliance Management Interface