The tips in the book are simple and effective. As a teacher I recommend most of these things to my students too, but I've also found a couple of new ideas here. The same tips can be applied to learning any language.
I'm an avid advocate of listening, watching and reading + learning the vocabulary actively too. I'm not so sure about listening while driving or doing other things though. I believe it should be done for pleasure, just like reading and watching videos, and you should be focused on listening, not other activities, otherwise it's not so effective. Maybe I'm wrong, who knows. And as for watching a film multiple times until you understand it perfectly well, it can be quite tedious and take a really long time. If you are on a level that requires watching again and again before you understand, it might be a good idea to go for shorter videos, for instance, TED. They have interactive transcripts you can read even while watching, and if you have to watch something 8 times, it'd better be a 10-minute video than a 2-hour film :).
Anyway, I recommend this book to language learners, if you follow these tips, you'll significantly improve your English (or any other language you are learning).
(review of free book)