This guide is part of a four-part App Guide series covering resources for building popular app types, specifically customer-relationship management (CRM) tools, using Bubble's no-code web app builder. Building a custom CRM traditionally requires expertise in software engineering, but with Bubble, makers can create powerful software without coding knowledge. The guide provides tips and resources for users to build their own CRM apps on Bubble, including examples of successful CRM apps built on the platform. It covers topics such as data structure configuration, user interface design, feature building with workflows and plugins, launching the app, and iterating based on user feedback. The guide also introduces the benefits of using Bubble's no-code tool for building web apps without code.