This video was made by one of the Ethereum Blue team. These guys are miles ahead of everyone else when it comes to crypto security and since this EtherDelta hack they have made it their mission to help every single person who has been affected.
I would recommend joining their Telegram group:
https://t.co/RoxhCbc3kuThey have a pinned post which gives written instructions to accompany the video above and you can also ask questions if you are having any problems with getting your funds out of EtherDelta. They will make it easy for you to understand crypto security and help protect yourself from future hacks and phishing attacks.