This document provides an overview of basic tools for analyzing processes and identifying root causes of issues. It describes brainstorming, including that it is used to generate unconstrained ideas in both the analyze and improve phases. Guidelines for effective brainstorming are outlined, such as establishing rules, individually writing down ideas before sharing, and using techniques like cause-and-effect diagrams to avoid groupthink. The document also notes that affinity diagrams can help organize the large number of ideas generated through brainstorming.