RULE OF THUMB FOR BUSINESS vision is to-become the leader in providing resources, published materials and presentation forums to small businesses for their growth, development, and long term sustainability. Our library of Rule of Thumb books was developed for those small business owners. Our expert authors are available to lead your team through practical and interactive training that will result in strategies and tactics to benefit the bottom line! Whether you are looking for training in business basics, marketing, human performance, or Microsoft Office applications, we can assist you in growing your business.