Beginners Guide to learn about Content Based Recommender Engines

One of the most surprising part about Recommender Systems is, 'we summon to its suggestions / advice every other day, without even realizing that'. Let me show you some examples. Facebook, YouTube, LinkedIn are among the most used websites on Internet today. Let us see how they use recommender systems. Facebook: Suggests us to make more friends using'People You May Know' section Similarly LinkedIn suggests you to connect with people you may know and YouTube suggests you relevant videos based on your previous browsing history.