How to jailbreak iPhone 4S 6.1.3?

I Have a iPhone 4S 6.1.3 and wanted to know how to jailbreak.

Your best option i YOUTUBE. Go there any type exactly what you typed here, find a video with the most view and thumbs up. Read the comments before you start doing so. Or you can vidit websites like ijailbreak.com

If Jailbreak is not available for this ios and devise you might have to wait few days or weeks.
Best of luck.