For browsing I'll start with the recent content on the homepage but as mentioned in my earlier post, this only goes back so far and is fairly "noisy". If I'm catching up because I haven't visited in a while then I will use the navigation to open up a whole lot of tabs.
If I'm searching, I'll use the search box in the top right and then maybe narrow down by searching within particular areas.
For content like reports, alerts and NCM device templates, I will use the drop down to get to the sub-area in the Content Exchange.