A training course in marketing.
In the small companies sales training is usually entrusted to the good will of the individual that must move within a huge range of proposals.
At the same time other companies spend a lot of money to give training to their sales people indistinguishably without a specific follow-up on it.
Very few have a selection of talent and take care of ensuring the satisfaction of growth expectations. (People do grow and experience the moment then it should repay the investment of the entrepreneur, they leave.)
Ever, this line is through the application, daily in real situations, a method that is the result of selected communication courses - trade sales - situational leadership-management.
The theoretical training based on hypothetical examples can not be considered competition to selling the selling.