Agreed - came to this thread specifically to mention this book. This book is enormously valuable to me, and I wholeheartedly recommend it to everyone (friends, family, colleagues). In fact, the related forum (http://www.bogleheads.org/) is one of the most helpful, welcoming, professional, and well-moderated forums I have come across, and is a great "next step" after reading the book, and developing/executing a plan. I know there are several HN frequenters there as well.

I also recommend accompanying Bogleheads Guide it with A Random Walk Down Wall Street (http://www.amazon.com/Random-Walk-Down-Wall-Street/dp/039333...). It ranks with me as another "life changing" book. Enjoy.