Objectively, for the price 1. There is a lack of explanation about the code when writing firebase and API. 2. The inconvenience of learning another UI framework from the perspective of not using Chakra UI Personally, I wanted to get a refund after only listening to the first part, but I couldn't get a refund because I took unnecessary parts and exceeded the refund criteria. I personally didn't learn anything, and I feel like I wasted my money because I couldn't learn anything even if I listened more. The instructor tries to be as kind as possible, but from my perspective, I didn't learn anything because it only sounded like this rather than a friendly explanation of the code. Also, 3 months is enough time to listen to everything, but compared to other lectures, 3 months seems short because there may be parts that you want to check after time passes. The lecture fee is not cheap either. Still, since the lecture was made with sincerity, I will leave a 4-star rating.