[Hummingbird] I can't make my site load faster

Hi, I'm kind of new to WordPress and I created a client intranet that uses several plugins to work. I am trying Hummingbird, because my site is taking to long to load. I followed all the steps suggested, but the one I am having trouble with is the one to fix all "Render Blocking Scripts". This part is to complex for my basic scripting knowledge. Do you have any solution for me?