Good

The title say advanced but I don't feel it that way, and the quiz is weird to ask me about the assignment I have done but does not refer to anything about it, it's not a good quiz. Some of video is reused from other courses (teacher is also different person)

The content is concise, and easy to digest.

** there is no best & bed practices we can get from this course, basically we can get this knowledge on the internet without specialists

These are just basic things in Kotlin, not advanced. All of these concepts are found in other languages. I had waited for some more advanced things like serialization, coroutines... On the other hands, the course use Android as its main platform, which hides the concept of a main function, and it's not multiplatform. Seems like the course's title is a clickbait.

The course is extremely basic, most of the materials should belong to the "kotlin fundamentals" course. The tasks are straightforward and won't prepare you even a little for a proper job. The final task is a joke, the codebase even marks what you need to insert and where. I highly recommend you not to waste your time and money, you have higher chances of getting a job if you just read the official Kotlin docs.