Google Analytics service launched in November 2005. It’s a free Web Analytics service offered by Google, That provides statistics and basic analytical tools for SEO (that tracks and reports website traffic) and marketing purposes. Analytics is the most widely used web analytics product on the Internet platform. The service is available to anyone with a Google ID (account). Analytics can provide following information about your website or blog.
• How many visitors visit your website?
• Where do they live?
• Your website is mobile friendly
• What websites send traffic to your website
• How can I improve my website's speed?
• Which pages are most popular on your Website?
• Conversion and leads
Set up your account and property
If you have a Google account, you can go to Google analytics and create an analytics account (http://www.google.com/analytics/).
After click the Sign Up button, fill out information about your website.Once you are finished, you will click the Get Tracking ID button.
Install your tracking code
You will get a popup message of the Google Analytics terms and conditions, which you have to agree to. Then you will get your Analytics code and tracking id.
This tracking code and tracking id must be installed on your blog page.
The blog built with HTML files, you will add the tracking code before the </head> tag.
To know more about: Webmaster Tools