Is the new site the same curriculum and lessons as this one? If I complete the courses on the new site, will I have the same results as I would if I stayed on this one?

I am not understanding this :( I've read all the explanations in the comments and I understand why "The attempts" is the subject, but I don't understand WHY. When I try a new sentence I just fail to even get close to identifying the subject or the predicate. Does anyone have any tips to help a girl out?!