In the current Equestrian version, we consider Curly Themes Extension shortcodes deprecated. You can still use them, but we no longer support them. We recommend using Visual Composer, for an easier process with better results.
If you wish to use the old shortcodes, you can find a complete list along with instructions in the Equestrian documentation for the old version, prior to Equestrian 4.0 version. The documentation version 2.5 is available here: Equestrian 2.5