I have put together some comments from the first couple of tutorials...
1. Shows examples of CSS styles applied directly to the tags without a parent class selector. This is bad practice as all tags without parent selectors should be reset using a reset CSS and should not be styled without a class selector. I suggest participants should reading up on object oriented CSS by Nicole Sullivan (Yahoo) that would prove useful for large scale enterprise websites.
3. New York Times > To quote: "Overall, the interface is presented with a top-down, center-periphery pattern that facilitates news-reading." where is the evidence for this? This is not research I have ever seen published or likely ever will.
4. New York Times > To quote: "Note also in the secondary column on the left, typography variations of the news titles indicate the importance ranking of these headline stories." No other website has secondary column content with a title larger than the center lead articles. You would be hard pushed to find this pattern in printed newspapers. The presence of the large image on the center indicates importance on center column and the presence of an smaller image represents importance on secondary columns (see BBC, The Guardian, CNN).
The web site example is to demonstrate aligning UI design with business purpose of an application. It is not so much about showing the latest and finest in UI trend. But we will reconsider the choice of web site example when the course goes through update.
About the CSS code, let me know if you are referring to one of the introductory videos. Those videos talk about styling concepts at a very high level. If there is any CSS code snippet, it is definitely not for teaching CSS coding in application development; and regular Pega UI development does not involve writing CSS code.