The widget areas are clearly identified in the area of the line # reference I gave you.
You’ll need to install Firebug in your browser or use your right click browser’s development tools to see what’s going on.
For example, using the dev tools in Firefox I can see you are using “.home-feature-4”. Unless you want to get into totally redesigning the way the CSS styles the homepage, which I don’t recommend, I suggest you look for one of the widget entries that suits the type of content you’re trying to display.
If you don’t put anything in the widget location it won’t display, so just jump down to the one that best suits.