Where is the bottle neck and how do I fix it for the sake of UX?

7 years ago from , Creative Director at inkbud

Chrome Dev Tools Timeline of webpage load time: http://i.imgur.com/IwVaR45.png?1

Any good articles on locating and fixing bottlenecks? I see that I've got 5 seconds till the DOMContentLoaded event but I am having trouble identifying where the real issues are.