Learning is like a video game The fact that there are exercises and projects in every theory section. I believe you should provide the solution or some hints, cause sometimes exercises are more complicated than theory.

Very good platform to learn Kotlin. I am using Hyperskill to learn Kotlin, with both the web version and the Android application. I especially like "The problem of the day" and the option of being able to review the concepts already seen.

The best place to practice skills The best place to practice skills that I have found. They are not trying to be hip and clever, just straight up skill development. There is enough repetition and enough exercises to produce actual learning. One drawback is the semi-gamifying of the platform. Sometimes getting it wrong is instructive, but if you run out of lives, too bad, wait until tomorrow. Even DuoLingo does better than that.

Best platform to learn Java and Kotlin The code reviews help you adopt best coding practices, the integration with IntelliJ is fantastic and I love the way the lessons are written in a concise way, much better than video in my opinion. Oh! and the exercises are great!

Your lessons are not well explained I recently started learning Python and at the beginning, it was going well but recently, the classes haven't been so explanatory. I was advised by my friend to find somewhere else to learn but I want you to know why.