Sort:  

either signup to binance or bitshares
Here is Binance Signup link: https://www.binance.com/?ref=12761991

Here is Bitshares Signup Link : https://wallet.bitshares.org/#/create-account/password

and just send steem to binance to sell for btc, then buy eos with btc, or send bts to bitshares with blocktrades and buy open.EOS with this link
https://wallet.bitshares.org/#/market/OPEN.EOS_BTS

so if you have you are bitshares password DON'T loose it save it in Lastpass with your steem password its the same sort of system, based on same tech by same Dan Larimer creator, use https://lastpass.com to save the password for the Bitshares account

now make sure you fund bitshares account with some Bitshares (BTS) which you can buy with your steem or SBD by selling , go to steemit wallet, under Steem or SBD, just click Sell and when you are taken to @blocktrades page, on the right select Bitshares so you will receive BTS for your SBS, makethe trade, and you can use steemconnect to make it easier. Or maybe youy want to do it manually its your choice. When you have the Bitshares in your Bitshares wallet go to wallet.bitshares.org and go buy your open.EOS its here on this page https://wallet.bitshares.org/#/market/OPEN.EOS_BTS

YOU click on the part where it says Amount and price, so it auto fills the lines, you needa know how to buya dn sell stuff just like steem inetrnal ,market where you can practice. You can't really mess this up, just click on the Bitshares that it shows you have, and click where it says Lowest porice, it will fill in the lines for you so you can click BUY buttom. Don't let the chart and numbers scare you

or you can use Binance, same thing but you send it Steem (not SBD steem only) and you just sell Steem for BTC and buy EOS with BTC

Wel explaination @ackza sir...

Coin Marketplace

STEEM 0.29
TRX 0.12
JST 0.032
BTC 63161.84
ETH 3061.57
USDT 1.00
SBD 3.97