Auctions
This is where I make most of my money. You will too, unless you can't win, or don't want to do auctions. If you want to do auctions, and if you can't win after reading this section, read it again, and again, and again. If you still can't win . . . I don't know. I'm sorry for wasting your time. If you want to do restocks instead, there's a section for that. I rarely did it, so I can't offer much advice. Most of my money came from auctions.
Anyway, it helps a lot to have a fast connection and a fast computer. There are many ways to win auctions, and I've posted most of them here. I've also posted tips on selling at auction. I've named some auction methods after the people I've seen do the methods (a lot).
If you still can't win at auction
Tips from the Auction Sniper akata2402
Tips from the Auction Sniper no_one_iz_truly_pure