# PWAs [Going Offline](https://abookapart.com/products/going-offline) #book - by Jeremy Keith [Progressive Web Apps](https://abookapart.com/products/progressive-web-apps) #book - by Jason Grigsby. A Book Apart. "Progressive web apps represent the next big digital opportunity: they look and feel like native apps, they work offline, and they’re available to anyone—no app store required. But with that freedom and flexibility come challenging questions about how to create the most value for your users (and your bottom line). Jason Grigsby answers the what, why, and how of progressive web apps, from making the case in your organization to reaching your users in bold, new ways. Build your audience, increase revenue, and widen the web’s reach—all with the power of progressive web apps." --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://brain.nathanarthur.com/self-study/pwas.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.