It was such a great lecture that I couldn't believe it was free. In particular, even though I read the book, I couldn't understand terms like DI and AOP, and you explained them in one go with examples. I thought I was just stupid, but thank you for explaining that the concepts themselves were difficult. You attached a list of the order in which I should listen to the lectures at the end, so I was able to immediately picture how I would study in the future. Thank you!