I don't know why people think that further and busman are the main 3/4's to do without 1/2. IT Apps is 85% common sense, it isn't anything to do with computing really.. If you have good articulation and skills in bullshitting, i'm pretty sure you can pull a 40+ quite easily...
I don't quite agree with this notion, I'm sorry.
Firstly, I'd like by saying I am speaking through pure experience and having done I.T Applications in year 11 myself as a Unit 3&4.
Okay, I would like to start off by saying that I.T Apps is not '85% common sense', sure you may be able to tell me functional requirements or tell me some possible design specifications but the crux of the question is how? How does this element apply, don't just sit there and tell me what it is, tell me why so. Secondly if I.T was so heavily focused on one's natural common sense then why in the 2011 exam was the state average for the eight mark question 2/8. Surely we cannot say that statistically 0% of the I.T cohort of 2011 (or close to it) didn't have the common sense to provide a succinct, coherent response to apply database and spreadsheet knowledge to an unfamiliar situation for eight marks.
I want to make this point very clear. I rebut the notion that any subject is easy to get a 40+, I dislike how I.T Apps is looked down upon in this manner, sure it wasn't my favourite subject but at the end of the day I treated it with respect. Respect the people who put this course together, respect your teachers for actually teaching you this. It is an honor to be able to learn what we can, and to the students who achieve a 40+ it would feel a bit demoralising if you're saying their efforts were purely based off their general knowledge. Unless you're insinuating that an individual such as myself lacks the general knowledge and aptitude to understand the I.T Apps course like apparently 'so many people do'.
And to the dearest original poster: I would recommend I.T Applications, but it is a subject in which you have to study hard. If there was anything I could recommend to you, I would say to go over the Problem-solving methodology in thorough detail, learn design requirements and specifications (functionality, accessibility, etc.). Furthermore, I would also suggest touching up on databases and spreadsheet, perhaps try a few exercises so you may sharpen your skillset.