So, real estate 101 suggests something that is a very simple first element of this occupation.jinti said:In American universities, the first (introductory-level) course offered in a subject often has the course number 101. For instance, the first English course will be English 101; the first economics course will be Economics 101. This sentence means that the World Bank could create a program introducing the basics or the fundamentals of capitalism.
Source - Capitalism 101
According to Books in Print, more books are now published with a title that begins with '101' than '100'. They usually describe or discuss a list of items, such as 101 ways to... or 101 questions and answers about... . This marketing tool is used to imply that the customer is given a little extra information beyond books that include only 100 items. ... For example, 101 Ways To Bug Your Teacher, a book by Lee Wardlaw.