AAOpen tuition lectures enough with past papers and total hours of lectures

It depends on your knowledge and confidence, open tution notes is just to get over all scan of the subject and if you feel confidence you can directly go and solve previous papers, if you feel you R unable to solve, then there is something wrong with your knowledge, which you must acquire. I myself completed all professional level papers using just opentution notes with examiners articles and past papers, but I am a qualified professional accountant from India with two master degrees and Completed CIMA exams before writing ACCA exams.