Read ten lines at a time, seperated the contents and grasp the key words. The basic English sentense is constructed with object, verb, and subject. Here, the keywords are object, verb and subject. In history, the contents are where, when and how. In Law, the contents are issue, application, analysys and conclusion.
Reading books must read the index page, reading articles, read the headline first. Get the idea first before start to read.
Practice, practice, practice, the end result should be 10 times faster