Set up what, if you refer to power up 100% then you write a post you will see somewhere near the post button, curation default with is decline, then 50%50% and 100% choose the one that suits you
When you get sbd you go to market, click the grid on the right screen and scroll to market and sell sbd for steem
After that you return go in to your wallet and click on steem and power up
Hope it helps