I loved codes as a kid. I think I checked out every book on writing codes from the local library and even took a cryptography class during my college computer science courses.

While I usually stay away from social media, some of the non-political areas are decent. Reddit has a codes forum where users post different codes that they have made or run across and try to solve them.

Links:

• https://www.reddit.com/r/codes/comments/1kjo8fz/comment/mry7g5a/