So I'm new to the community, and I don't have a capture card for my Xbox, would I need to wait until I can afford one before I can record and submit a run or can I film my TV and submit that way?

You can console stream through twitch app

New to Twitch too, I'll try that out, thanks a bunch!

Make sure to go into your settings on twitch. I'm assuming the mobile app or a laptop if you have it to activate your archives so that your streams save