Relatively few Web design sites discuss the importance of content or its organisation. Those that I found are linked here. These may not be directly relevant to you, but they might be interesting to read nonetheless.
What Makes a Great Web Site?
http://www.webreference.com/greatsite.html
Includes guidelines for making "great web sites". Their first four guidelines relate to content; other guidelines address topics that will be discussed in later sessions of this class.
Impact of Data Quality on the Web User Experience
http://www.useit.com/alertbox/980712.html
Jakob Nielsen, Web usability guru, warns that the quality of content is important. Content must be error-free where possible, and you should encourage users of your site to report errors.
Yale Style Manual
http://info.med.yale.edu/caim/manual/contents.html
A style manual from the American university. This is quite a good book and covers most aspects of Web design.
Follow the link to "site structure" from this contents page for a summary of several possible site structures, including the hierarchical organisation that was covered in the class, but also a few others: "Linear narrative" isn't a structure that was fully covered in the class; "Web" roughly corresponds to "disorganisation" in the bad sense; and "Grid" is a structure that also wasn't mentioned which can sometimes be useful, but is rather specialised. Anyway, an interesting read.