@MrMoody - My only experience with intranet portal software was with a short freelance stint I had as a content management editor.
I had to create articles and upload them to the website using a content management system. It was fairly easy to use, and organized my material in a tree like structure.
It was strictly tailored for content. There was little in the way of a graphical interface; it wasn’t web design software or anything like that.
I admit it took the better part of a weekend to learn how to use it. Like the article says, there is a lot of administrative stuff you have to do to get it working properly. The most important thing, however, was to keep the content fresh, as this was the key to keeping readers coming back for more.