Starting out selling electronics - help please!

am extremely new to this, and don't really know where to begin. I wanted to start up a with e-bay to sell thing good eg: DVD's, car auto, Home-Theatre and stuff like that, but I don't really know where to get them from. I searched the wholesale on this website, but didn't find what I was looking for to sell in AUST.

Who do I contact to buy directly from the source, so I can get the cheapest possible?

I also live in the AUST, do I need to get a business licence or something before I can sell online over $10,000.

If someone can answer my questions and help me please do!
Thanks so much!

You can please try to checkout the following links.
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