Sales training needs to be done by people that have actually experienced the profession, both the daily reality and the challenges as well as the benefits. Avoid trainers that have a great education but little life experience in the field as they often don't understand the reality of working in sales.
How much time you wish to dedicate or commit to sales training will most likely depend on the type of product that you sell and the potential benefit that you will receive for completing the training. Commissioned sales people are more likely to attend trainings than salaried employees.
Learning to target a sales niche or area to market to is usually a key component of effective sales training. Determining if you want to sell for price, service, quality or a combination will dramatically impact on the type of sales trainings and techniques will be the most effective.
