Millionaire Teacher explains how to start investing as a middle-class person so you could retire a millionaire. Andrew Hallam, who was a Canadian English teacher, explains how to save more money through extreme frugality and where to put our savings for the most dependable growth. (Hint: index funds.)
"Rich Dad Poor Dad" by Robert Kiyosaki is about learning how to make money by investing and starting businesses, instead of just working for a paycheck. It compares advice from his real dad, who had a regular job and struggled with money, with advice from his friend's dad, who was rich because he understood how to make money work for him.