The resources already linked from this thread are surely superior but, as a shameless plug, I wrote a blog article recently on this very topic as it was present

The resources already linked from this thread are surely superior but, as a shameless plug, I wrote a blog article recently on this very topic as it was presented in my linear algebra course at CU Boulder: https://thought.place/articles/2017/7/22/pagerank/ https://thought.place/articles/2017/7/22/pagerank/