You can use options outside of the BTS options on blocktrades.us - It is very beneficial to learn about bitshares before jumping in. It can be a bit confusing if you have't worked with openledger or the bit system. Blocktrades is pretty self explanatory. One thing to keep in mind is that BTC is very expensive to make transactions. I would suggest you trade to a less costly coin to make transactions and move money around. STEEM is not a terrible cost to do the business, and blocktrades supports that trade. If you go to their site, it will let you know if they option you select is available for swapping or not. Read up on OpenLedger and Bitbtc to learn more about the coin exchange in Bitshares.