Your store should be running on Magento Community Edition version 2.0.x and 2.1.x.

Video Tutorial Playlist

(Go to the playlist to view more: https://www.youtube.com/playlist?list=PLOgckfH7zlZvxHoQ13oN-Baqk_iXfa4wY )

Configuration

Login the Zoho account

You must to have an existing Zoho account to use this extension. If you don't have a Zoho account, you can create one by go to: https://www.zoho.com/crm/ and click CREATE ACCOUNT.

Click Sign Up Now button to register a new account. 

Give your details and you will get the Zoho  account

After verify your account via email, access your account in Zoho CRM to get the Auth token.