thank you all guys, I see the deep water here, i just want to leverage BTC to my e-comercial business. i just know the coupon and gift card could be trade by btc. by now:) and need to know more!
nowadays everything can be sold for bitcoin. you are a newbie in bitcoin you need to learn lots about bitcoin and bitcoin trading.
just take a look at digital good section, you'll get to know that there are lots of people trading/selling gift cards for bitcoin.
for learning something you should learn from some institute or you can learn online also but don't hire any tutor here. the forum is full of scammers and sharing your personal data with him could get you trouble.
I believe the number of scammer is much less than good person.