Naah, delete your browser cookies if you get that thing where the old man tells you to subscribe, then refresh the page.
And yes, if you don't know anything, then it will help.
But if you aren't bothered to learn it properly, just read the dot point summaries for each section to get the important stuff.
Eg.
http://www.skwirk.com.au/p-t_s-14_u...-of-the-century/nsw/history/australia-to-1914
For School Cert History + Geo actually require a fair bit of knowledge from memory, more than science, maths, english etc.
But your aim in year 10 should just be to make sure you can do maths cos its an important foundation for HSC, and to develop your english essay writing skills. Everything else you learn and do is pretty pointless.
*Wait, actually i think its the yr9 & 10 course combined, which i don't think you need both for history+geo, but science and maths you do. So just refer to the syllabus for what you need