This one is rather quick if you know where to look!
First go to http://business.pinterest.com/ to convert your account.
Secondly you need to select which type of business you have i.e blogger. If it doesn’t send you directly to the setting page access it via the menu in the top right corner under settings. The analytics option is also available for you to browse now.
Here are the settings on my pinterest. Pretty straight forward.
If you still need to verify your blog check out the tutorial on how to verify with pinterest.