There are many ways to plan out projects, ideas, and plans. You could use a simple piece of paper, a digital planning tool, or you could use a mind map.
I first came across mind mapping when I was at school. One of my teachers showed us how to structure an essay, and his method was to create a mind map and develop arguments using the branches of the map, so you never lost sight of the question.
The next time I use mind maps extensively was when I began creating presentations in the early 2000s. As an English communication teacher teaching business executives in Korea to better communicate with their English speaking partners, I was not teaching vocabulary, grammar, and structure—my students already had that. I was teaching more about the culture of communication in the English speaking world.