content: So far I really like it. It's very informative and useful. I would have given 5 stars but I have it on Kindle and in hindsight would have rather gotten the book in paper. It's difficult to "flip through the book" and find what you need. But I am fairly new to Kindle so maybe it's just me. Or old fashion enough to prefer a book in hand. But I do recommend it in whichever form you prefer.