The easiest and most reliable way to obtain Bitcoins is to buy them at exchanges, or through ATMs (yes there are ATMs offering Bitcoins).
As with any trading, it is important to choose the exchange wisely to minimize the risks connected with trading. Here’s a list of the most notable Bitcoin exchanges:
Unfortunately, we weren’t able to find any exchanges for Steem. If
you know any, please feel free to contact us on firstname.lastname@example.org.