I know it's super beginner question, but what can I do in Discord? How are people are using the community?

It's the place you can talk and show your love to the EC as much as you want! You can talk to a mate in the server so you can share the memory of the game, interest for the EC franchise, and share your great art/cosplay/whatever you want to share with your EC friends! Don't go overthinking, just join the exciting chat! We need you!