In the menu, select Account, then my blog. If you have taken control over your blog, you can rename it under the tab "Settings"

Navigate to my blog page under "Account", in the settings tab there is an "update thumbnail" button.

Navigate to my blog page under Account in the menu, if you have taken control over your blog, you can select "Statistics" in the tabs to the right, keep in mind that the code you paste on your blog must be right for the statistics to work.