To add Google Analytics to your site, you need to begin by visiting Google Analytics.

• Start by creating a new analytics "property" (select universal analytics):

• Then get your tracking code ready and copied to your clipboard.
• Open up Cyberduck and navigate to your desired theme (in my case /var/www/ghost/content/themes/Readium-master

• Select the "default.hbs" file and edit with your text editor.

You need to add your Google Analytics tracking script anywhere before the </head> tag (in the picture below at line 29).

• Go back to your Google Analytics page and get to the Real-time report and after a few refreshes, you should see it change to 1 (note you need to have your site open in another tab if it isn't).

You're all hooked up!