Download GMAT Guides (FREE)
I find one esnips link where you can find some GMAT guides to download. Some of the guides are:
3) Kaplan etc
So you have to click this link in order to go to the site where the documents are hosted.
Disclaimer: Sharing and downloading of GMAT material without permission is piracy. So please be aware of this. Also if the above link is not giving the right file, then you should infer that they have been removed due to copyright violation.