Learn to Speed Read
This is a good article from Mindtools.com on training yourself to speed read. Notice I said training, there is no secret formula, this does not happen overnight, however if you discipline yourself to utilize these tools it can dramatically improve your reading/comprehension speed.
Think of the number of emails, blog posts, websites, datasheets, and manuals you read every day. How much time could you gain if you could cover the same amount of material in half the time. These techniques can translate into hours per week.
The article goes in depth but the key strategies are:
Increasing the number of words in each block
Reducing fixation time