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.