Set up a Dashboard on Klipfolio

We have a sales management system and we are looking to create dashboards for our clients to analyze their data. We are looking to create our first dashboard with data from one client connected to our database in Heroku or to our API (Whatever works better, the important thing is to have data updated live in Klipfolio) . We don't have much experience with Klipfolio, so any ideas are welcomed.