I am very eager to take a Macro course which will probably be next year.
Micro-economics focuses on the aggregate supply and demand curves.
The aggregate supply curve is based on 'the theory of the film.' (not my favorite term)
The aggregate demand curve is based on utility theory.
These aggregate curves are the aggregation of every individual curve.
Macro economics also focuses on price in the four types of markets: perfect competition, monopolistic competition, oligopoly and monopoly.
Only with perfect competition is the price point where the aggregate supply curve meets the aggregate demand curve.
Second level micro economics largely goes over the same concepts but with calculus.
Macro economics is about fiscal and monetary policy.
Fiscal policy is the role of elected politicians, monetary policy is the role of the Federal Reserve.
Monetary policy focuses on such things as the velocity of money (probably the worst term in economics as it makes a very simple concept sound very complicated) and the money creation process.
Fiscal policy is, of course, government spending and taxation as well as regulations and maybe even trade policy can be included in that. Ricardo's comparative advantage is also covered in macro economics.
Edit: Blue3 above wrote trade policy is separate from fiscal or monetary policy, so I'll go with that and state my above comment is wrong.
Fiscal and monetary policy are both covered with a discussion on Keynesian economics vs. Monetarism and the debate over whether or not the multiplier effect is zero in the long run.
The multiplier effect is also a simple concept of the basic idea that if an already existing dollar is spent by the government, that dollar will be re-spent and result in higher aggregate spending (aggregate demand.) Most mainstream economic teaching states that, unless the economy is in a recession, that dollar spent by the government as it recirculates and is spent over and over again (which is all the 'velocity of money is' except, that the velocity of money is the number of times the dollar is spent over a given period of time) will either result in inflation or simply displaces money that would have been spent by some other economic actor anyway. So, mainstream economics mostly teaches that, except during recessions, the long run multiplier is zero.
This debate was a major part of the downfall of Keynesianism that Blue3 outlined above. However, I disagree that Keynesianism is no longer followed or that Monetarism is a complete return to classical economics. Keynes himself only argued for government deficit stimulus spending during times of recession. It wasn't really his fault that politicians altered his theories to call for deficit spending at all times (he died before deficit spending really took off) and stimulus spending is still largely advocated during recessions.
Also, I disagree that the role of the Federal Reserve proposed by Monetarists is the same as that advocated by classical economics. For instance, as far as I know, classical economists advocate for the Gold Standard while most Monetarists don't.
If you have a good teacher and are interested, you should ask that teacher to provide some material on the back and forth arguments between John Kenneth Galbraith and Milton Friedman during the 1960s and 1970s.
http://economistsview.typepad.com/economistsview/2006/12/friedman_and_ga.htmlBoth of them had PBS programs in the late 1970s, probably the last time academic economists of the day were household names.
Galbraith, as the first article points, out was regarded more as a social commentator or economic historian though than as a respected economist by his peers.
As far as I know, there really isn't a second level macro economics course, but most of the higher level macro economics courses are focused on a specific topic that are largely based on macro economics (labor economics, money, banking and financial institutions, environmental economics...)
Behavioral economics is likely largely a followup to micro economics as many of the concepts in behavioral economics challenge many of the assumptions in micro economics (economic actors make rational decisions.)