Typical Questions
Academic Libraries: Typical Information Sources
Subject Guide
Current Information vs. Comprehensive Information
Typically, it takes longer to write and publish a book, than it takes to write and publish an article.
Hence, (recent) articles tend to be the best source of current information. This is especially true of newspapers, which are published daily, and which may be updated multiple times a day online.
That said, books are typically the best source to consult when looking for more extensive information on a topic.