Yes. To add Google Analytics to your website, you simply create an account on Google Analytics. You get a small piece of code that needs to be added to each page on the website.
Most modern websites will have settings where the code can be placed.
It should be noted that adding analytics to the site is only the first step in the process. Once it is added, it is important to ensure that you are clear on what you want to measure. It
might require setting up Goals or Event measurements in analytics to properly track the activities you want insights from.