Adding Google Analytics to a WordPress Website
1. Adding Google Analytics manually
I prefer this option as you are not relying on a 3rd party plugin.
1.1. Log into your admin panel
1.2. Go to > Appearance > Editor > Look for footer.php (on the right)
1.3. Copy and paste the Google Analytics code before the </body> tag.
1.4. Click “Update”
1.5. Go to the front end and look in the source code to make sure the Google Analytics code was added succesfully
2. Google Analytics plugins for WordPress.
You can find some here:
http://wordpress.org/extend/plugins/search.php?q=+Google+Analytics
They should come with instructions.
Hope this helps