You know Zoho is good but you don't know how to take advantage of it.
I will setup your account, customizing fields for your business.
Zoho has many modules, but with 4 most important that would be LEADS, ACCOUNT/CONTACT (2), DEALS (OPPORTUNITIES).
These 4 modules are the core for Zoho. Leads you insert people is not qualified. Contacts are people that you know could be your customer, account would group these contacts and finally, opportunities (deals) that are chances to you sell something to somebody.
Your main goal should be creating new deals, follow those, make the sale and close the opportunity.
I will do that for you on a 4 hands job. You tell me what you do, and I will suggest the best cenario to you work with Zoho.
Thank you and enjoy.