Ok guys, you need a Steam account.
You need to buy a game like CS:GO or H1Z1.
These video games have virtual items that you can purchase and sell via 3rd party websites like opskins.
My method here is purchasing a virtual knife on cs:go for lets say 100$.
If you pay attention to the rates it sells, you can figure you can sell the item real quick for lets say 95$.
opskins will take away like 10% of your sale, so in the end you should be able to cash out like 87$ worth of bitcoin.
Most websites I have came across that let you purchase bitcoin have like a 35% tax or something in order to purchase btc.
(Like lets say you want to purchase 100$ of btc, in reality you're only getting like 70$ worth of btc.)
Using my method, you're only paying around 16% to get your bitcoins.
If you purchase a subscription to opskins they only take 5% of your sale. Another note worth adding.