I decided to read these back to front. It has been a slow process due to how dense each sentence is. There is no filler or fluff. Having Google next to me helps whenever I have gotten stuck on words or meanings. Most searchers are math concepts that I have to review. If you have the drive, I recommend reading these. The book is like jaw breaker. You can't just quickly chew the information, you have to slowly melt the information.
But I've heard they make good reference books as well.