After signing up for the free trial, you will be lead to a dashboard that will look like this:
a. Click on the Add Connection link for Vend.
b. Click on Login to Vend.
c. Key in Vend details - Store name, Username and password in their respective fields. Click Allow Access.
d. Continue the steps by clicking on 'Next' for the next two messages:
e. Click Save.
f. This will finally lead you to the page that will say that you have synced in your Vend and Woo successfully, and you will be given an API key which you may find in your dashboard: