How to get turnip trader and streetpass badge?

[Giddy]

Hi,
I'm not sure if this is where I asked, but I've always had difficulty with turnips and streetpass. I understand that with turnip trader, you get a badge by profit and I've tried selling turnips, but never understood it really well. Same with streetpass.
Any info would be appreciated. Thanks in advanced.

 

[Miii]

For the turnip badge, you want to buy the turnips at the lowest possible price, and sell them at the highest possible price (just like in the real stock market). I'd advise you to keep tabs on the Official Turnip Prices Thread to see if anyone on here has a high selling price (600-something is ideal).

The gold streetpass badge is probably the hardest one in the game to get, if you don't live somewhere like Japan. You'll pretty much have to go to a gaming convention of some sort (after going to two, I got to silver. Still don't have the gold one).