Website(s) for Varieties & Errors?

[Digger Boy]

I've been watching U-Tube CRH videos and decided to give it a whirl, though on a much smaller scale.
So yeah, I know about Wheaties, Indians, Buffalos, Silvers, War Nickles, etc., what I'm not familiar with are all the Varieties and Errors, especially on newer coins.

Can anyone recommend one single website (or two) that lists Varieties and Errors by coin type with pictures & descriptions.

Thanks

[Coinshark]

For error example/descriptions:
https://www.error-ref.com/error_and_variety_check_list/
Examples of newer coin varieties:
https://www.usacoinbook.com/coins/varieties/
Other varieties:
https://doubleddie.com/

There are tons of examples. Not all are valuable, just different.

[Laxsaltman]

I second error-ref.com