Sales As A Business

Numerous long and short books have discussed about sales and selling. Many famous people including celebrities and business tycoons have written books about sales and selling. But one thing I hardly see discussed if ever is sales as a business. This is better known as the commission system where you sell your selling skills not as an employee of a company but as a contractor or business partner. This book discusses this kind of business as well as the real importance of sales skills in a business.
Also, in a slight deviation, this book would also discuss sales in one of its most basic form: grocery sales and the various ways to improve it...