I just finished eco and this is what i found.
Originally my school recommended that i DIDN'T do eco because it was beyond my ability. I ended up getting 93.
-If you apply yourself and work hard i strongly believe most people can get solid marks in the subject, however for some people the concepts just don't click (despite them being relatively simple) and they resort to rote learning.
-Difficulty is all relative so don't waste your time asking if it is hard or easy, instead ask people if there were certain aspects of the course they found challenging etc.
-Ensure you're always up to date with current business news, it really helps you apply the theory you've learnt in class and apply it in the real world with relevant examples. Everyday i would spend 15 minutes reading the business news from an online source (e.g SMH), this is enough. From this i found i was able to gain a deeper understanding of the content and thus learn the underlying concept rather than memorising/rote learning content. Accordingly, this gave me the strong skills needed to apply relevant and current statistics/examples in the essays, an aspect of the course that most students struggle with. I highly recommend you do this, it develops your ability to link concepts to real life whilst also seeing trends in certain statistics (e.g economic growth, inflation) in real time.
-Keep up to date with your notes. This is pretty obvious but in year 12 the content starts to increase, especially in the "Economic Issues" topic that contains quite a bit of content