The best, I think

The best English book found so far. You can read the lessons in any order or simply those we interesting, since, unlike too many learning books, each lesson does not consider that you know the above. In fact, not knowing a point addressed in a lesson does not stop to understand the following lessons.

I honestly made progress and finally understood the points that left me stiff before, especially as many lessons relate to comparisons or differences.

The book comes with exercises (lesson on a page, the exercises on the facing page), additional exercises at the end, and an additional exercises CD at the end (which only works on Windows pure . Mac and Linux go your way, emulator or not).