Theme Horse

@Cameron This forum is the support for the Attitude Pro theme. For the instruction page you can visit this page https://www.themehorse.com/theme-instruction/attitude-pro/. If that does not support your query. You can search this forum or start a new topic.
To install the rev slider packed within the theme, go to Appearance->Install Plugins and install the rev slider plugin from there.
To learn on how to use the theme you can visit the following videos
http://www.themepunch.com/codecanyon/revolution_wp/liveguide/02.video.html
http://www.themepunch.com/codecanyon/revolution_wp/liveguide/03.video.html
http://www.themepunch.com/codecanyon/revolution_wp/liveguide/04.video.html

After you can successfully created a slider. You can use it int the following ways.
1. In the dashboard, go to Appearance->Theme Options->Slider Options Tab->Slider Options. Choose the rev slider there and in the ‘Revolutions Slider Options’ bar, adjust the settings and click on ‘Save all Changes’.
2. While you create the sliders with rev slider, you will see the corresponding shortcodes are also generated which you can use in the post/page content to render the slider.

Hope this helps.