Limited and Pro users can set up Google Analytics for Simple Blog. If you already have Google Analytics for your Strikingly page set up, you should already be able to see the data for your blog posts.
To set up Google Analytics for your Strikingly page and blog posts, go to Google Analytic's site! GA will be able to give you more information than you'll need, and they are very stable -- they are free as well, unless you use their ad services.
Get your code to verify your site and add your GA account in 'Settings' 'Advanced' and finally 'Services.' Enter your code. Go back to GA and make sure your site is verified. You'll be good to go!