Ask HN: How can I learn macroeconomics properly?

Last 3 years has shown that to be a good investor you need to know macroeconomics, specially in context of USA which bring stuff interest rate, QE, bonds pricing, commodity prices, and many similar things which are interconnected. I have lot of general knowledge but I want to be at an expert level of knowledge in predicting/understanding what feds, markets, rates are gonna do and why.