iPhone 14 Pro user training course

Hi, guys I have just bought a new iPhone 14 pro but not directly from Apple so I can't avail of their training I live too far from an Apple store to go in (I would have to take a flight) I am based in India is there anywhere else I can do a course on the iPhone, I feel I never use it to its full potential, looking for a course that will take me from the basics of the phone to all the advanced functions and settings. I'm neurodiverse so an online course or in-person would be great. Thank you in advance for your feedback.