You are welcome to watch our short tutorial here or follow these simple steps:
1. From your Shopify admin, click Settings > Checkout.
2. In the Order processing section locate the Additional scripts text box.
3. Paste the tracking code you received from StoreYa's Traffic Booster to the Additional scripts text box.
Note, if you already have another script in the additional scripts box (even another Google tracking code), just paste our code above or below it (they do not interfere with each other).
You are welcome to watch our short tutorial here :-)