training/freelancer on PJSIP

As a Sales person and Team manager I have taken Training sessions on products and selling techniques trained approx 19 field persons till date and wanted to experience my skills in other fields also the things that needed as a training manager is as follows 1- Knowledge of product 2- who are the competitors 3- Competitors Specification 4- USPs of your products 5- why my product is best 6-Establishment of concept in fields staff members 7- making easy assessment to learn with joy