iPhone 16 pro max - detailed user guide needed

I just made a huge leap in technology moving to this phone. I’m overwhelmed and lost about what features are available and how to best utilize them. I Need help.

A road map and users guide that provided an overview of new features and details in each would be helpful.

I would appreciate the ability to get the most from the technology in my new phone. Where is the guide to help me do that? I read that it wasn’t available and the AI told me there is an Apple book I can download but the chat was erased. Need to find it again. From a usability perspective this is very frustrating from the end users perspective.

I started out watching several YouTube’s from people who didn’t do a good job explaining how to do somethings that should be simple, ie getting Siri to work so I could register my voice. I would benefit from a roadmap on how to streamline common tasks so I could be more efficient in repetitive tasks. I read that is the goal but there seem to be many moving parts and the concept of making a whole process out of the individual pieces is not intuitive.

thanks for whatever pointers you can provide your users to make using this amazing tool more intuitive.

I would benefit from a getting started guide to help me with an overview and understanding of critical functionality and how to best utilize.