I feel like I'm getting a lot of great tips from my brother who works at a good development company. At this price, it's the price of buying a drink from him, so I don't think it's expensive. If you don't have colleagues or connections around you who can give you advice, whether you're a newbie or an experienced person, I recommend taking this lecture at least once. * Thank you, instructor, for the great lecture. * One thing I regret is that there were a lot of typos in spelling and spacing. Even if it's annoying, if you could fix it by using Naver spacing, it would be helpful for others.