To get started with Shoelace & Conversio, here's a couple of quick steps you should follow:
In your Shopify dashboard, go to the Apps section and then click through to your Shoelace dashboard.
(If you don't have Shoelace installed yet, click here to install their Shopify app.)
Now you will want to click through to the "Settings" page in Shoelace which will reveal a page looking like this:
On your "Settings" page, scroll down until you find the "Conversio Integration" section. You'll see something like this:
At this stage, make sure that you are also logged into your Conversio account. Click the "Connect to Conversio" link and follow the the prompts to authenticate your Conversio account to Shoelace.
That's it. You're all done. ;)