Andrew Carnegie (a self-made steel tycoon and one of the wealthiest businessmen of 19th century) was quoted as saying, "90% of all millionaires become so through owning real estate." His statement still applies today as about 90 percent of the world’s millionaires have been created by investing in properties. Property investment is still considered to be one of the biggest investment opportunities of all time. Investors can realize attractive returns from real estate investments. Rental properties normally appreciate in value with inflation and are also good contributors of passive income. Read these recommended books by practicing authors before you start to invest in properties to build massive wealth!