Funnel Management . I will recommend this link after reading this you will able to get an idea and you can design your own Excel sheet followed by Access which you are familiar with to do wonders in Forecasting and effective planning for closing the sale. You will be most wanted in the Sales Man jobs after this.
I always found our Major sales man will work on A prospect more and even companies i had found they are more keen on A prospect but according to me a company or Sales man working on C prospect will succeed and he is a true sales man and he will be loved by many.