not all lessons must begin with practicing on a demo account, some lessons even require us to read books first, like the basics in forex, we won't understand it if we don't read it first in the book. but for intermediate and advanced lessons such as discussing strategies, we must read and immediately practice them in the demo. and reading books about forex trading is very necessary because there we can find new knowledge about science. we can add to our knowledge about how to trade. I really like reading and I also like to collect trading books