I am 76 years old and truly needed a good tutorial and go-to manual for the operation of the phone itself and not with all the apps and games. For example, I still don't know how to adjust the "brightness" on the phone. There should be an index at the back of the book with specific items one would reference to locate a certain system of the phone like a car manual would have. I almost have to sit down and SEARCH to see if I can find what I am looking for which defeats the purpose of the manual. There are many seniors out there like me who can figure out tech things but just need the simple instructions by which to accomplish it. It's almost like a "Dummy Book for Seniors to Use the Samsung Galaxy S23."