If you want to clear some space out in your house and have a big stack of books you’ve been holding onto for too long, you can make money selling your books and textbooks online. Stores like Half Priced Books and others will give you cents on the dollar for each of your current books while you can check what your book is worth by simply entering the ISBN number on Book Scouter.
Bitcoin is a new type of decentralized crypto currency in digital format. it can be seen on tv mobile screen but You can not take and give physically. It can be seen in a number format. It can be send and receive person to person with in a second any where in the world without involving banking systems. The best example of digital currency is paytm in India. It is created my Satoshi Nakamoto in the year of 2009.