This document provides an overview of brainstorming, which is a process for generating creative ideas and solutions through intensive group discussion where all participants are encouraged to suggest ideas without criticism. It discusses that the purpose of brainstorming is to generate many new ideas by starting with an open mind. Benefits include encouraging out-of-the-box thinking, coming up with better ideas faster, helping to innovate, and gathering new data. Basic rules outlined include briefly setting the problem, inviting different people, presenting information, welcoming weird ideas, focusing on quantity over quality, withholding criticism, and setting an engaging atmosphere.