Hello..
I am setting up Google Analytics on my website and im not sure about what to do when adding the tracking code.

I have a main domain & a few sub-domains.
Do i add the tracking code to each of them?
or.. Just on the main one?

Not sure, because i dont want to start getting double, triple, etc.. stats because i have added the code wrong.
Can anybody let me know how to do this please?
Thanks!