Ah, don't worry, you'll soon find that new users are only allowed two links per post anyway! And there is a limit to the number of posts they can write daily until they get out of their new user status and become a regular user.
That is one of my favorite features of Discourse, the fact that it will limit new users on what they can and cannot do until they show they want to be a contributing member.
Welcome to Markdown. I'm still getting used to it myself
Oh, and I can't wait to hear about the experience each of you have and any recommendations to ease the pain of anything that wasn't glaringly obvious.