If it's your first time with one of these courses you might feel pressured to work at speed as some of the other participants seem to do, but they are in all probability young and hoping to use the course as part of a qualification - you can, of course, get a Statement of Participation at the end (for £50!), but since I do the courses for fun (this will be my 5th) I don't bother.
Just work at your own speed and if you find the course is not for you, you can leave it. No one will contact you to discover why, but you can always put a note on the forum if you feel you need to explain. With so many people participating in this one it may be difficult to follow the conversations on the forum, so if you find one of them interesting just select "follow" and you will be kept in the topic.
Sit back and enjoy what's on offer. I just hope BT and Open Reach will get their act together before Monday and allow me to access the course.