I am relativly new with F-secure products
I want to understand what is the different between Policy Manager and Protection Service Portal
You can find here the links to both Business Suite(Policy Manager) and Protection Service for Business(PSB / Protection Service Portal).
That should clarify the differences between the both. If over-simplifying Policy Manager is a locally hosted management solution, and Protection Service Portal is an online management solution.
To clarify better which solution would fit your company, please get in touch with one of our reseller/partner or our sales.