The simple definition of investment, by Google, is "the action or process of investing money for profit". So, there are countless investment methods/vehicles that fits this definition. Of course, one that fits the definition of coolest must be something very with WOW factor. Today, one of my friend shared in his Facebook that he has made a 15,700% returns with his hobby-tuned-investment. I am really happy for him. Curious to know what is this right? Read on... To its simplest form, it is only a book. Of course, it is not an "ordinary" book, it is one of Andrew Lang's book. He bought the book with mere USD 40+ and resold it with USD 6,300/-  WOW! Crazy right? In the current internet age  as well as the influx of eBooks, one might thought that physical books will worth lesser and lesser. But the truth is, it ......