In order to embed a twitter feed to your SSDPage Builder website you first need to create a widget on twitter.

Go here: https://twitter.com/settings/widgets

Click 'Create new', and run through the configuration settings. When you're done hit 'Create Widget'.

You'll then see a new box with HTML code in it:

 

Copy that code, and go to your SSDPage Builder 

Add the code to your site using a RAW element(i.e "Adding HTML/CSS/Javascript")