Data Journalism Handbook available online for free
The Data Journalism Handbook is available online for free, and includes insight into how top news organizations use data to enhance their reporting.
With chapters about the use of data on the part of BBC, The Guardian and The Chicago Tribune, as well as 18 case studies and basic instructions (with links!) on how to scrape the web for data, the guide is thorough.
You can find the handbook in its entirety online here.