Hi Sunshine

I am also from SA originally, and probably Australia is the closet to South African in terms of weather and lifestyle. You have not said where you are intending to moove to but heregoes anyway.
Jobs - search the Internet ie seek etc etc. Post your resumes etc.
2 ways to get in , job sponsorship which is the quickest , but has certain drawback as you are not a permanent resident, no medicare benifits etc, you would still need to then apply for perment residence. You need to read up on these visas. If you are going to try for a job sponsorship , you need to check on the Dima website if you occupation in on the MODL list. Certaibn migration agents also look for jobs for you. Of course you pay for this service.Permanent residents visa application can take anything form 18-24 months to come thru.
Housing- you will only get a rental once you arrive in Australia, I recommend that you rent a furnished place for 2-3 weeks , check on the areas you want to settle into then rent a place of your own. How much depends on the city and where you want to stay. Can vary apartments from $300.00 per week to house avaerage $500.00 per week.
How much enought to see you through for the first few week plus purchase a little car . How much is that - well depends on your life style. Car price have a look at Redbook and idea for housing have a look at myhome or reiwa.
Sorry I cant post url's as the administrators will not allow me to.
But please use your immagination.
I would recommend you have a look at SA Australia on the web, very useful info on that site well laid out as well cost of living plans budgets etc etc
Very pertinent to what you are looking for.
Hope that helps some