-Jump
-pick up coins
-find hidden moons
-moons have sounds and vibrate the controller just like stars or shines have always had
-use the UI to see what moons you have left to get
-blah blah amiibo crap blah
These are pretty basic things that most should already know, if you've ever played a 3D Mario game.
This is a very tricky subject. Some people claim they simply updated nvidia drivers using geforce experience and went to play the game and got instantly banned. But how do you know they are telling the truth?
Wow that is pretty damn nice looking. Sure as hell wish Nintendo hadn't decided to wash out this game to hell and back. No clue who thought that looked nice. If Miyamoto did shame on him.
Guess my fondest memories would be of the 64, so it sticks out as the best one for me. I do have lots of memories of the NES and SNES as well, but I guess I was a bit younger so they stick out less. Also the first time seeing a 3D game like SM64 was just revolutionary, it blew my young mind away.
Of course you can, you just have to play the games that are rated E. It's no different than any movies or music. Gotta love how you included the Switch which 90% of games on it are family friendly... (It's actually probably higher than 90%)