For all the adventurous self-learners out here, we would like to invite you to our self-study group named Integer Club.

IRC: https://webchat.freenode.net/#integerclub

Slack: https://bit.ly/integerclubslackinvite

Mailing list: https://groups.google.com/d/forum/integerclub

We pick up old concepts from popular textbooks and literature as well as new stuff from new literature in both mathematics and computer science. We plan to have online meetings periodically to share what we learn, work through popular literature, and have a few talks on interesting topics.

It is a tiny community right now that hangs out at Freenode IRC but the Slack channel is there too if you are more comfortable with that.