Pasting HTML Code Into My Homepage

I want to be able to track my website with Google Analytics, but I don’t know where to paste the HTML code they give you to track your website. So far, I have pasted it on one post, and it didn’t show up visibly, so good. I think that I may be able to paste it on the title screen, but am not sure if this will work. Any suggestions?
BTW my website is
http://www.gameplayintentional.com