The late Tony Buzan called mind maps the Swiss Army knife for your brain
Mind maps turn ideas and thinking into a colorful diagram. It is a way to transfer your thoughts to paper (or your screen) and then imprint it more visually and permanently to your memory.
You can use mind mapping for organizing, presenting, explaining, planning, learning, negotiating, taking notes, and making notes.
All you need is a piece of paper turned horizontally and some pens or pencils, preferably, but not required, in several colors. The different colors make the process more fun and the resulting drawing more memorable.