Reddit reviews The Librarian's Almanaq

You can see from the print at the bottom that this is from Games Magazine, which is still a thing. Also Panda Magazine is an online-only publication that focuses more on puzzles and less on articles.

The "puzzlehunt" community, which typically prepares some really cool, hand-crafted, well-tested puzzles, runs events on a small, medium, and large scale, some of which may be in a city near you or available for download.

The Almanaq series of books (one, two) also have some cool puzzles like this.