What are sites to learn for kids. Especially, video lectures. The lectures should be simpler to understand.
According to chessyourchild.com, the top 5 sites are:
There's also a chess.com forum about it: https://www.chess.com/forum/view/general/safe-chess-sites-for-children
As a child, I used chesskid.com right about when it was established. It was pretty good, but I found nothing worked better than on-the-board learning. It all depends on the psyche of the kid; I recommend that you try these 5 sites and see which fits best.