The document outlines several rules for investing, including Rule 72 which states that to calculate how long it will take money to double in value, divide 72 by the interest rate. Rule 114 states that to calculate how long it will take money to triple in value, divide 114 by the interest rate. Rule 70 states that to calculate how long it will take for inflation to reduce the value of an investment by half, divide 70 by the inflation rate.