Chapter 8 tells you how to create an in-text citation using the author-date system (8.10). It also tells you about the two formats of in-text citations (8.11). Read about the principles of paraphrasing starting at 8.23 and direct quotation starting at 8.25. These sections have useful guidance and examples of where to place your in-text citations. There is also important information about plagiarism (8.2).
From the APA style website
The APA style website (https://apastyle.apa.org/) has good information to support the manual. Here are some useful links and guides.