I will suggest you start with our video tutorials from this article 

Where can I found the reactive pro tutorial videos?

The videos are a bit old but you will understand how our plugin works,

Then please start with our quick start guide from here 

https://redq.gitbooks.io/reactive-pro-advance-searching-filtering/content/getting-start.html

after that please check this FAQ's

https://redq.gitbooks.io/reactive-pro-advance-searching-filtering/content/faq.html

and docs from here 

https://redq.gitbooks.io/reactive-pro-advance-searching-filtering/content/system-status.html