Hey Good Work, its indeed a very good tutorial, really easy to grasp, and it helped me to learn a lot, here I would also like to add that I regularly follow official blogs of worlds best web development firms like DCS, GoodCore Software and others because such blogs of web development firms are current according to latest web developments and designing standards, and they did really helped me a lot to understand web app development processes, I would suggest other budding developers to do so too.