How do I get the hotest artocle using Piwik

Hi, thanks for the great project first.
I installed it just few hours, and I like it very much.

I have a article website. My most important requirement is “Get the Hotest Article”, which means the most viewed aritcle during customer period.
I saw APIs and Goals in the backend, but I don’t know the detail process.
Could someone tell me the operations and steps?

Sorry for my ignorance and poor english.