User guides for iOS 17

At this time I can't see the Apple Books version of the new User Guide but I'm sure it will be available soon. Until then the online version is available, just make sure you select the correct iOS version in the dropdown chooser.

iPhone User Guide - Apple Support

The Apple Books versions of the new user guides are still not available in the bookstore. It’s beginning to look like Apple has no intention of making them available in that format any longer.

That's not desirable. I can't go through online communities, trying to or understanding one or more features in an iPhone's Settings.