Proceeding with various methods for news recommendation
Recommender Systems are a huge topic of its own right and goes without saying, with a lot of research going on. 

This book does a deep-dive into recommender systems and may not be something you want, but it's helpful as a reference. It seems like you were unsure what those terms mean. The Berekely AI Course covers most of these topics and their lectures are available for free.

You might be able to make better choices after going through some of the above materials.