An important thing to remember about reading code is that it does not read like prose. More often than naught, reading raw code, even in the most logical sequen

An important thing to remember about reading code is that it does not read like prose. More often than naught, reading raw code, even in the most logical sequence possible (say, UI - View - Controller - Model - Migration), will still be deeply confusing. If you can get a local version of what you are trying to read running with easily modifiable source code (good luck), then you'll be able to execute and watch for changes. In my experience, the two most helpful ways to "read" code are using the tests first and documenting functionality second, both of which the author mentions.