EASY, USE BLOCKTRADES
HOW TO USE BLOCKTRADES TO GET USE OF SBDs

.....this makes no sense to me.. - WHY WOULDN'T YOU JUST USE THE INTERNAL MARKET INSTEAD???
( I've only read the title - not looked at the video - so it might be mentioned there.)
The internal market is very useful for sbd/steem transactions.

simple
go to wallet click on your SBD menu , then ' market '

this pops up,

and just enter the amount of SBD on the green side (if you want to sell sbd for steem)