I actually studied economics and worked 4 years in the economic department of a bank, but I can't say I understand much about the economy. My feeling is macroeconomics itself doesn't help understand much of the economy. There is hardly a topic where all economists agree.

If you want to have an idea about how the best economists think the economy works, read the economist. Don't be surprised if they completely change their minds now and then. Only last year I would not have believed they would support a stimulus package today.