Did anyone study and get a training on how to do a Sale-call?

preparing for a t promise a sales call can't promiss favourable outcome, but into someone's office to try and sell something, do a little preparation. The idea is to develop a comfortable framework where you have  enough to prepare for some sales calls, not to procrastinate forever as a perpetual students.

To make a sale call no body is trained its all about the raport which we built with the user and the language how good we speak.