Here's a full tutorial on how to cash out Steem Dollar + Bonus
How it works:
1) Sign up for an account on poloniex.com
2)Sign in to your Account and
go to Balances - deposits & withdrawals
3) search for SBD
and click Deposit
you should now see something like that
4) copy "MEMO" and the poloniex deposit address "poloniex"
5) go to your steemit account and choose transfer from the menu next to your STEEM Dollar
6) Paste your "MEMO" and "poloniex"
7) Hit "Transfer" and your Steem Dollar should now appear in your poloniex Account (10minutes)
8) change back to poloniex and scroll down where it says SBD and hit enter
you should now see this
underneath "SELL SBD" you should see your balance in my case 0.61 SBD
simply fill in the amount you want to sell - just click on the amount
and hit SELL
-when sale is processed succesfully you should now see underneath BUY SBD - your Bitcoin Amount
9) you have now 2 options
sell your Bitcoins or spend your Bitcoins
9.1) selling Bitcoins for Cash
go to coinbase.com and sign up for an account over there
(Coinbase is 1 of the best Bitcoin/USD exchanges)
and transfer your Bitcoins to https://www.coinbase.com/join/577bd1d08bfa3103100000e1 - simply follow the Instructions
9.2) spending your Bitcoins
if you like shopping on Amazon i have a special offer for you:
1) sign up for a coinbase account
2) sign up for purse.io and save up to -15% on all Amazon Articles when paying with Bitcoin
thats it
If this tutorial was helpfull please upvote my Post
thanks