Research Statistics

Heya folks, I'm doing an Informative speech for my com class. After doing some audience analysis, I realized no one cares, nor do I care, about what I originally planned. So I'm going for League.

Now, I've got the obvious sources like the thing Riot posted a few summers ago and that video, but I'm looking for more. There was an article on like Jan 23, 2014 that had some astounding numbers. But I need a hard, reliable statistical source to cite.

Any help? Advice? Ideas for the presentation? I'm going to be using Prezi (because powerpoint is retarded). If you want to help with stiching the Prezi together, I would be glad to accept... those sorts of things are my weak point. :(