How to root and install CyanogenMod on a Sprint Samsung Galaxy S3

Don't have the phone yet but want to do lots of reading so it is a easy process. Help in any way would be much appreciated. And yes I know google is my friend and I could just look it up but I want to try and get help from people that have done it. And people on The Tek are all nice and trustworthy. Thanks in advance

http://forum.xda-developers.com/galaxy-s3-sprint

how about after the OTA 4.3 for an sgh i747 ( GS3 att)