Help with what?
Before installing the CC you should uninstall CS6 as CC will capture the license. With CC you can install a better and extended version of CS6 together with all CC versions.
Actually, it is quite possible to have both perpetual license CS6 and and later CC versions together on the same system, at least on Windows, but it can be a real pain to get it to install correctly. The trick is to not be signed in with the Adobe ID you use for the Cloud subscription when you install CS6. Took me about an hour, as I recall, to get it all straightened out on my system.