Thank you for buying my Kindle, or softcover book. It's my 5th, and perhaps the most important one. It tells the reader what I do with my own investments. I am revising the book to include Block-Chain stocks. In other words, I am staying with John Doody's GSA-10 (top 10 gold stocks), and his GSA-5 (top 5 silver stocks), and adding Block-Chain stocks to our mix. Going forward, our investment program at Interactive Brokers will comprise 85% mining stocks, and 15% Block-Chain related stocks. I don't have to tell you, the reader, how the Block-Chain development has changed the world of investing. If someone would have told me at the start of 2017, that Bitcoin, which started the year at $1,000, would soar to over $19,000, I would never have believed it. As a financial adviser since 1987, I prided myself in my goal of doubling client's money every three to five years. But to have a new investment class (Bitcoin) rise some 1600% in one year, you just have to sit up and take notice.