Um, it may not be new to you but it is new and eye opening to me and there might be hundreds or thousands of people who haven't read about this. From a newbie's

Um, it may not be new to you but it is new and eye opening to me and there might be hundreds or thousands of people who haven't read about this. From a newbie's POV, I quite like how the author explains the concepts with the example of an e-commerce company. Sure there will be advanced concepts but the author makes no claims that he is addressing that audience :) .