I did COS 114 before, which is the same. I di not complete because i took too many subs. It was also greek to me then. I just went through the whole textbook as if an idiot, doing every click they said. When I restarted it this year, most of it came back to me.
So my advise: just follow as the book tells you to do.
We then had a bunch of IT guys taking it also, and in their spare time helped us on the discussion board. It realy helped, because you don't seem to get answers from the tutors...