This app was mentioned in 2 comments, with an average of 2.00 upvotes
Heh not compatible with my old GT-I9001 it says... oh damn.
But: http://www.rockstargames.com/V/info/manual
Theres an option to download for PC/MAC also
Other apps you might want to download in anticipation of launch:
Official Manual https://play.google.com/store/apps/details?id=com.rockstargames.gtavmanual
Companion app: https://play.google.com/store/apps/details?id=com.rockstargames.ifruit
Maps/Cheats: https://play.google.com/store/apps/details?id=com.leziente.gtacodes
Wikia guide: https://play.google.com/store/apps/details?id=com.wikia.singlewikia.gta
I would not open the last one because it may contain spoilers!