which side of Australia would you expect to be very dry, and which side would you expect to have more rain? explain

Western Australia is drier than eastern Australia.

http://www.skwirk.com.au/p-c_s-16_u-307_t-752_c-2821/patterns-of-climate/nsw/patterns-of-climate/australia-s-physical-environment/physical-characteristics-of-australia