What you're feeling right now is perfectly normal - I think everyone has probably experienced this post-VCE slump. What I will say though. is that sometimes it's really easy to say, 'I'm bored, it's been two weeks since my last exam, I'm ready to go again'. VCE is a really tough year and it can be incredibly confusing for your body/mind/heart to fall from such an intense level of studying to... not knowing what to do with yourself.

You do need a bit of time off to recharge... trust me. That's not to say the entire holidays needs to be spent bludging around. What about volunteer work? A part-time job? Catching up with family/friends? Learn a new instrument?...
The best piece of advice I can provide is not to rush into uni straight away... even though you sound like a keen bean! I have just completed my first year of university and upon reflection of my post-VCE holidays, dealing with your ATAR or making sure university/GAP year/other plans are sorted out can be quite a task in itself. I know that from personal experience, I had to do
a lot of course rethinking, planning and emotional recovery after I'd received my ATAR.
On that note, from receiving your ATAR, change of preference periods, university course expos, course invitations, enrolling, O-week.... All of these things take up (surprisingly?) a lot of energy - physically and emotionally. This is particularly prominent for students who obtain ATARs that dash their expectations, or just miss out cut-offs . It can be an agonising period that might involve a complete change of heart or plan. If you fall in this boat, please don't feel like you have to deal with it yourself. Contact your school careers advisors, talk to parents/older siblings/cousins, talk to universities who offer plenty of support to students during change-of-preference season (just you wait for the advertisements/random letters in the mail). Last year, Monash sent me a beachball.

You sound like a student who is rather capable, so this might not apply to you. I just thought I'd throw this in here because I think this information could benefit other users here.
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Going back to your actual question, many subjects for Melbourne University have the textbook/ recommended reading lists available on the internet via the handbook. These are listed under specific subjects that can be accessed after clicking on a few links. That might be a good start for some wider reading. :-) Plus you can see what subjects are available to study. I should mention, this in itself can take a lot of time to figure out, purely because of the number of fantastic subjects on offer!!!
Handbook links for Biomedicine and Science I hope these work! If they don't, let me know. Biomed:
https://handbook.unimelb.edu.au/view/2016/B-BMED#structureIdScience:
https://handbook.unimelb.edu.au/view/2017/B-SCIGood luck!
