A step-by-step tutorial on how to install your Google Analytics code in Google Tag Manager. You will need to have created accounts on both to do this.
Learn how to create a Google Analytics account --> http://www.slideshare.net/arielylim/how-to-create-a-google-analytics-account
Learn how to create a Google Tag Manager account --> http://www.slideshare.net/arielylim/how-to-create-a-google-tag-manager
See the complete post on http;//ariel-lim.com/google-analytics-basics-how-to-set-it-up-properly