here is an article that explains a bit about discord. there are other links there to introduce PAL(minnow Support). its only the first half of the article, so when you get to the Steem-Art section, stop.

link about PAL ; https://minnowsupportproject.org/

link about Discord: https://steemit.com/steem-art/@torico/hey-do-you-know-about-the-new-steem-art-chat-server-on-discord