Pros: 1. Each lecture is short, so there is no time burden 2. It is okay because the method provided by the next is explained with the network tab 3. It is not bad if you listen to next lightly Cons: 1. The tone is uncomfortable to listen to, so it is hard to concentrate (maybe it is just me) 2. You have to study routing separately (it is not explained in depth) 3. There is no app folder-based next grammar, so you need to study on your own (if this is your first time accessing nextjs, I do not recommend this lecture.)