Surely you noticed while surfing around the web of what pages are easy to "overview" and where you get lost in finding the right answer or link. See for example the Homepage design of Google and how simple it is to get around , often less content is better but be concise and always think in your visitor. What his needs are and what he might be looking for.
Don't overload your pages with text and pictures, try to make your message short and to the point.
With too much text and information the surfer gets lost and might not find the what he is looking for.
Now clearly content comes first, but it needs to be presented in a way the ready can get fast to the part of info he or she needs. So the presentation is important and it may make sense to slice the content up in subsections with a clear index so its easier to surf fast to where one wants to go. Remember online the visitor hast only little patience to stay around and clicking back out is often the result over either slow page loads or one cant seam to find what one is searching for.