Never heard about Rob Booker. But if you interested in price action trading, Ichimoku trading & other PA based trading I would like to suggest Chris Capre for you. Because I completed few courses under him. Google 2ndskilesforex. Hopefully you can get to know more about him and there are loads of free articles, videos,analysis & other materials available there.
Currency trading was very difficult for individual investors prior to the internet. Most currency traders were large multinational corporations, hedge funds or high-net-worth individuals because forex trading required a lot of capital. With help from the internet, a retail market aimed at individual traders has emerged, providing easy access to the foreign exchange markets, either through the banks themselves or brokers making a secondary market. Most online brokers or dealers offer very high leverage to individual traders who can control a large trade with a small account balance.