Best way to track trade-show event leads to calculate CPL

Best way to track trade-show event leads to calculate CPL

Hello,

I'm a relatively new user to Zoho CRM but have used Salesforce quite a bit in previous jobs.  Our sales and marketing team will be attending a trade-show in the coming months and I want to track the contacts and leads that came from the show through the sales cycle.  In SFDC, I would enter the amount of the show and create a visual to show the cost per lead and other metrics.  

What's the best way to do this in Zoho CRM?  Campaigns? 

Thanks in advance for any help!
Joe