Reddit mentions of Modeling Monetary Economies

I think the Solow model is a fantastic place to start in your understanding.

If you want practice with different models, Williamson's Macroeconomics is a lovely model-building intermediate macro book. He does everything from the ground up in a modern style. The downside is that he takes forever to get to a model that has realistic policy implications. A good book for monetary models is Champ's Modelling Monetary Economies, which is pitched at the upper undergraduate level. I personally learned most of my skills by working carefully through McCandless and Wallace's Intro to Dynamic Macro Theory, which is another upper-level undergraduate book.

In terms of economic modelling and stuff, here: http://www.amazon.com/Modeling-Monetary-Economies-Bruce-Champ/dp/0521177006/ref=sr_1_1?ie=UTF8&qid=1334165283&sr=8-1 is the textbook I used for my Macroeconomics Theory 3 class (in the UK, so no idea how it compares). It's really good and really helps teach you stuff with nice problem sets all the way through. You need to understand utility curves and isocurves for it, but beyond that I think it's pretty explanatory and doesn't treat you like an idiot.

There's always Tim Harford, though you're probably beyond popular economics books by now. I, personally, loved "Economic Gangsters", by people I can't remember, but that's because I love development economics.