The new WordPress block editor (a.k.a. Gutenberg) is a radical change for developers used to working with PHP. If you needed to learn JavaScript deeply and quickly to update your plugins and keep everything working, you may still feel a bit overwhelmed. The development of blocks represents a major challenge for all of us not proficient in JavaScript. In this talk we will show you a set of good practices to follow when developing with Gutenberg, as well as typical mistakes that you should avoid so that your code doesn’t break anything.