I think one of the problems for this course is the sheer number of participants. Reading all the comments becomes a chore (even if you are looking for the RC logo) Some comments may be helpful, some misleading. Stick with the information given by the course material if you are not sure, but on the other hand don't hang back from giving help based on your own experience.
And thanks, Trystan, for the logo and instructions. It was a bit of a struggle but I finally achieved it.