Hello, welcome to Argent Dawn!
You can find some basic information on Discord servers and roleplay hubs in the following thread:
Edit: I know Argent Dawn EU Roleplay discord has recently also created a ‘Getting started’ section, where you might find some useful information related to both roleplay and general gameplay.
In the above thread, there’s now some lore videos linked under Tips too, to help people new to the setting catch up on it.
If you’re looking for more particular roleplay avenues, or ideas on where your character concept might best fit in, don’t hesitate adding more information about your OC when you feel ready, so that people can give you more specific advice!
Best of luck!