I just installed the studio and watched about 5 Kotlin lectures. I took the lecture. I thought it was a bit difficult because it started with entering code right away.. but as I kept watching, it seemed like the teacher had prepared the class a lot.. and when I looked for other lectures on YouTube for parts I didn't understand, I thought it was a good value lecture. I was wondering whether to leave a review or not.. When I searched for lectures on YouTube, there were lectures on short functions.. How do I connect all of this and make one app? That's when I saw this lecture and I'm satisfied. I'm still making a Twice app. I'm satisfied and I have to finish it quickly..ㅎ