For a limited time I am giving my e-book away for free at http://www.impulsecorp.com/download-my-ebook-for-free . It is called "How To Make Money Online" and although the book is about my various business ventures on the Internet over the past 20 years, several chapters are about cryptocurrencies. For example, in one chapter I discuss my experience with Bitcoin cloud mining, and in another chapter I talk about all of the various Bitcoin 2.0 type currencies. You do not have to give your email address or register to get my e-book, and I am not trying to sell or promote anything.