I read a lot of speed-reading books when I was in college. I was working my way through, living in my own rented place, so time was of the essence. But I eventually decided that a lot of speed-reading techniques are less useful than they appear. The most helpful book I discovered during that research phase was Reading for Power and Flexibility

http://www.amazon.com/Reading-Power-Flexibility-Sparks-Johns...

which was a refreshing change of emphasis from most other speed-reading books.

Good techniques I learned from various sources were pre-reading (for example, making sure to read the whole table of contents, the whole preface/introduction/foreword, and even the whole index before starting the book proper); focused vocabulary development targeting words with Latin and Greek roots used in the international scientific vocabulary; and daring not to read a whole book if reading one section of it would answer my question.

Good vocabulary development books are

http://www.amazon.com/English-Vocabulary-Elements-Keith-Denn...

and

http://www.amazon.com/English-Words-Latin-Greek-Elements/dp/...