So, you want to join Courserrim? In case you've made it here without reading the information in the Coursera forums, here are a couple steps to follow:
1. Complete the Introduction. We cannot add you into the kin until you pass that point in the main storyline. Be sure to ask here, on the Coursera forums, or on the coursera chat channel in LOTRO (see topic in this forum for details) if you need assistance getting through the early quests.
You will know that you have completed the introduction when you finish the quest "The Assault on Archet" (if you are a man or an hobbit), or the quest "Skorgrím's Tomb" (if you are an elf or a dwarf). At this point, you're character will likely be about level 7 or so. (See the following posts in this thread for more details about the introduction).
2. Speak up. As there will likely be many of you trying to join the kin this week, we need to know you want in so we can add you. Once again, use these forums, the Coursera forums, or most importantly the Coursera chat channel in-game. That's the easiest way for us to add you, since we won't have to check forum posts and hunt you down. ;)
3. Welcome to Courserrim! Congratulations! We'll help lead you through the rest of the course and the in-game events Professor Clayton has planned... as well as a few events of our own! Keep watching the forums and participating in-game to find out more!