How do I use Printcart API keys in my theme or store?

[VictoriteCO]

Is anyone experienced with Printcart? Do I take the API information and put it somewhere in the theme or store or do I leave it alone?

I'm not experienced in Shopify as you can tell (blush)

This is the text just above the api box of info:

API

Your API Keys for SDKs and Printcart API