Agreed. I think no need to buy a book about bitcoins because there are many of it which are in different articles depending of the author's opinions. Maybe you get confused which author you need to trust with most reliable information. I think it is enough to get learn through to this btt forum because there are many user's of which are already experts and more experienced that can give you reliable information on how to get successful on this cryptocurrencies online business. Information like, trading, selling, holding for short and long term investment plans and etc..