School me on the Nintendo Switch

[kurtzie]

School me on the Nintendo Switch.

I'm think of getting one for casual gaming for my wife and I.
Mario Kart, Mario etc…
We don't have any human children and the dog doesn't have a big opinion on gaming console choices.
I know supplies are limited, but Target and Best Buy seem to restock every few days.

What are the must have accessories?
Anything to be aware of?

Thanks,
Steve