1. Previewing the text to get an overview
Previewing a text means that you get an idea of what it is about without actually reading the main body of the text.
2. Skimming
Skimming involves running your eye very quickly over large chunks of text. It is different from previewing because skimming involves the paragraph text. Skimming allows you to pick up some of the main ideas without paying attention to detail. It is a fast process. A single chapter should take only a few minutes.
3. Scanning
Scanning is sweeping your eyes (like radar) over part of a text to find specific pieces of information.
4. Intensive reading
Intensive reading is detailed, focused, ‘study’ reading of those important parts, pages or chapters.
This is 4 general steps, and will get you a 100%.