I’ve been a PC user since the late 80’s. I’ve been noodling a full-on switch to the Appel ecosystem for a while. My wife and I are both happy iPhone & iPad users so the Apple environment is not new to us. How big of a learning curve should I expect switching to iOS? The actual file migration from PC to iMac looks straight forward enough, I’m more concerned with navigating the new-to-me graphic interface. Are there other things I should also worry about?