Oxbridge Home Learning A Level Biology

Hey everyone, I'm doing AQA A Level Biology through Oxbridge Home Learning. I've been going through their notes, but notice that (apart from the numerous typos) quite a lot of extra information is given, and it's really hard to know what to commit to memory and what to skip. For example, for cells, they provide illustrations of the structure of the Golgi apparatus, although that level of detail isn't required according to the syllabus and has not come up in any past papers from the past 5 years. They also ask you to research the differences between 70S and 80S ribosomes, and again this isn't on the AQA syllabus (and again hasn't come up on any past papers I have seen). Also, for example, where the syllabus does state you need to know the main functions of each organelle, this is given in a longwinded and haphazard way in the notes. Did you find this is to be an issue?