How do you make money fast by trading pokemon cards? My friend said he had made 27$, and i am jealous.?

Squidmaster

Your friend probably made that money by selling specific rare cards, or bulk lots of rubbish cards in a big box. The only way to make money with card like these is to already own cards that have value, and to sell them. Otherwise you end up having to buy cards in to try to sell, and you won't make back what you paid for them.