Quote Originally Posted by ridextreme View Post
tbh the best training material is to sit them down at a phone with a list and a basic script to use as a foundation. As they get submissions in they will start to get the hang of it.

I think a hands-on approach is much better than trying to learn from a textbook.
Very true! Listen, Learn, get comfortable on the phones but knowledge is confidence too. Having something to piece together your thoughts while you are on the spot doesn't hurt.