If you want to practice it, I updated the Bowling Game Kata. I have it in Java and in JavaScript, I recommend both, and all that you have to do is copy each slide to the code, and run the tests. It seems stupid, but Robert C. Martin put so many good practices in it, that you can learn a lot.

The updated kata is here:

https://david-rodenas.com/BowlingGameKata

I recommend doing it every a few weeks. For, example, after more than 20 repetitions across years, I am still learning new hidden pearls inside this kata.