What do you do before you write?
You brainstorm about the idea or topic you are writing about. Everybody brainstorms before writing about something, even famous authors like J.K. Rowling, Beverly Cleary, and Judy Blume. Brainstorming is a way to think up ideas for a story or a book. Write down everything that comes to mind.
Any crazy thought might become a good story that you write. Brainstorming can help you write about something serious, or just a story that you write for fun. To get ideas, look around you, or read lots of books you like and you could write the next book of a series that you like, or you could ask friends or family for strange or funny ideas.