I've been listening to Zerocho's lectures consistently, and I feel that the explanations and examples are good enough to be used in practice. However, one thing I regret is that sometimes the lectures are copied and pasted, or the source code that is not very important is processed quickly, so it takes time to apply the code. If git branches are separated by lecture, it would be easier to check and test the examples. Also, if you leave links to the explanations or mentioned sites or documents in the middle, it would be easier to refer to them. Lastly, thank you for always giving great lectures.