Adding Google Analytics Code I'm 5 minutes new to Craft and G&amp;T, but my client needs GA installed on their new site.

Any thoughts about how to do this?

Also, general SEO questions: are there SEO plugins a la wordpress that you guys can point me to?
Installing GA is easy... you can either put that info into a Global field, or include it as a separate Twig template.

As for general SEO... Check out the SEOmatic plugin or the Sprout SEO plugin.