# Books There is a large number of books on service design out there. We highlighted some of our favourites in this article on the [top 20 design thinking books](https://www.smaply.com/blog/top-design-thinking-books). Furthermore, we strongly encourage you to read the business bestsellers This is Service Design Thinking and [This is Service Design Doing](https://www.thisisservicedesigndoing.com/). TiSDT is the theoretical foundation and the background why Smaply was founded, and TiSDD comes with an extra smaller book on how to go about Service Design projects. --- # 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://helpdesk.smaply.app/learning-resources/books.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.