Newsbank lets you search for news articles from lots of different sources. This could be especially helpful thinking about issues with the internet, positive and negative.
Databases like World Book give you clear definitions and descriptions of important terms like TCP and IP. You could also use it to find definitions for other technical terms like DNS, DSL, URL, and Wi-Fi.
When you're thinking about the positives and negatives of the internet, you may want to search databases about specific aspects of the internet (like social networks) to get information about the ways people use the internet.