I like to buy stuff from eBay. How to start a eBay business?

I want to start a ebay business but don’t even know where to start. I also don’t have anything to sell. I have heard of dropshippers. Can someone tell me how much it cost to start a ebay business? how much can I make a month? how do I find a droppshipper? and how do I start it all on ebay? Thanks

My Mom and Sister really want to start a business on eBay, but don’t have any sort of direction. How do they become authorized resellers / distributors?