This is the second lecture after design patterns. The content is really good... Especially, it is explained easily. First, it gives insight into the target, and it has the characteristic that you have to study on your own. If you want a lecture that tells you everything from 1 to 10, I do not recommend it. However, if you want to remove the unfamiliarity that you can't feel at all through self-study, and become interested, I recommend it. + The occasional miscellaneous techniques(?) or know-how are good tips that are hard to hear anywhere else.