There is a YouTube channel (and other things too, I am sure) called Cracking The Cryptic. On it, two chaps take you through different types of puzzles and show you how to solve them.
To me, “cryptic” means crosswords, and they do some of those, but increasingly rarely. Generally they go for hard ones, and even with the explanations I find them difficult to follow with words that I have never heard of. But they are interesting.
They also do a number of sudoku-type pencil puzzles. Here’s one: https://www.youtube.com/watch?v=GUs0h3YRhaw