Click the Inventory tab if you sell products and enter your inventory.
Click the Customer List tab and enter all of your clients, suppliers, and vendors.
After that you will be fully up and running!
IF YOU HAVE EMPLOYEES:
Click the User Management tab and enter all your employees as users.
Decide if you want them to be able to login to the system and use it. Click the "Activate" link next to their names if you want to let them login. "Deactivate" them if you don't want them to login.
If you pay commission to any of your employees, click the Commission tab and assign commissions to each of your sales people.