If you want to enhance your finance and become rich, then the Rich Dad Poor Dad book will help you a lot. In this book, author Robert Kiyosaki explained how rich people think and invest in and develop their finance. Six lessons you should know is mention in this Rich Dad Poor Dad book.
An investment is an asset that will work for you. Rich people don't work; they invest so that money will work for them. There are many types of investments like stocks, Bonds, Mutal Funds, Retirement plans, Real estate, etc. You can learn everything by reading books which is mention in the article.