Ah yes, revision. It's a broad topic, with tons of techniques. Here are some of them:
First, if you're not familiar with The Oatmeal, you have to read these. The Oatmeal uses comic strip humor to demonstrate some things that should be common knowledge. Here's one of my favorites about How to Use an Apostrophe. It's basic grammar stuff, but presented in an oh-so-funny package. :)
Books Are Like Ogres. They have layers. Author Janice Hardy shares how she revises by going through her story layer by layer.
Roz Morris has some fascinating techniques. This is a girl who knows what she's doing. She has what she calls The Beat Sheet and uses it to measure the high points, low points, and plot points of your book by marking all the important aspects. She even has a nifty little example of how to use it starring Harry Potter.